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Genesys LAN User Manual - TDK

1. C Use UTF 8 for mailto links Java Sun Use JRE 1 6 0 _18 for lt applet gt requires restart Ja Multimedia gt Verify the Use JRE checkbox IS checked 15 8 Web Page Refresh List Does Not Find Slave Supplies When you are using a LAN Multi drop chain of supplies see section 12 the web page Refresh List button should detect all the connected RS 485 slave supplies If it does not A Verify the LAN master is set for RS 232 That is verify the rear panel dip switch SW1 bit 6 is DOWN B Verify all slave supplies are set for RS 485 That is verify the rear panel dip switch SW1 bit 6 are UP C Verify all slave supplies are set for unique addresses and they are set for 19 2K Baud Do this by pressing each of the front panel REM LOC buttons D Verify all slave supplies are Multi drop enabled This is shown by looking for the MD option in the model identity string or the product label or send the RS 232 command MDAV and expect a 1 response See section 12 3 1 15 9 Cannot Connect Using Hostname Ifthe power supply s IP address is set to Static IP you cannot use the hostname address with the Genesys LAN To use the hostname address when using DHCP or Auto IP addressing the NetBIOS or some other naming service must be running in your computer or network server For Windows XP A Right click on My Network Places Select Properties See window open TM B Righ
2. Genesys Optional Interface LXI Compliant LAN Cand cevours GENH4O 19 0 47 0108 a CE oe O SS J 3 ALARM FINE User Manual TDkK Lambda USER MANUAL FOR LAN Interface LXI GENESYS POWER SUPPLIES Applies To This document applies to LAN cards with a firmware revision that ends in LAN 2 1 Onwards This version adds TCP and UDP sockets Manual Supplement Refer to the Genesys Technical Manual for information on installing the power supply safety requirements specifications operating the front panel using the serial RS 232 485 programming and the analog J1 programming IA672 04 01 Rev G TDK Lambda TDK Lambda Table of Contents TL GENER ALAINFORIVIA TION iescessccnssvesscivcentsseacsionavetenssthneesaders stones eaan in eniai aias i kes iaer a areias kiaina 6 NOUO oaea E E A EA A E E AEE 6 Te Fea UN a E A E N E E E EE TEA 7 Oe EMG ATIONS ausirai vs ces scechsisnsauscusasuetasiausaessvoieaastessusaosiesssdstacistsaaususicvieneivaseassssuuieusivescauecsivatesiascoveisess 8 21 Power SUDDEN Specifications eraser cana snmnanadinatuncnnunien nantes NE VAE EEEE AEO ENAERE ENAN E N 8 2 2 LAN SSC CHC AO INS so ccc ceeacse cz scevsceneivtscecaecavenvetesacos lt NNE ON E ANSE IO ENTEN EAI EN ANN NEE NR 8 ALAN COMIN OCC airnya E EEE EEEE EO E EE 10 3 SELECT THE CONTROL METHOD cserscssverecisuccucasesscusnsisandvorauscouscossatiaessuscoranessovcacsnsecan
3. 57 TDK Lambda 13 SYSTEM ERROR MESSAGES These are the system error messages which may be returned from the SYST ERR query See section 11 8 1 for a description of this system error queue ERROR ERROR MESSAGE ERROR DESCRIPTION 0 No error No error reported 100 Command error LAN card receives command with unspecified error 101 Invalid Character A character was received that is not a z A Z 0 9 period space CR LF 102 Syntax error LAN card receives unrecognized command word 104 Data type error LAN card receives command parameter with wrong type of data Example a letter where a number is expected 109 Missing parameter Valid command received but not enough parameters 112 Program word too long Command word had more than 14 characters before separator space or colon was found 131 Invalid Suffix Attempt to select multi drop address gt 30 222 Data out of range Attempt to program voltage current or OVP beyond supply limits 241 Hardware Missing When operating in RS 485 Multi drop mode an attempt was made to address a non existent supply 350 Queue Overflow Too many SYST ERR messages are stored in this queue and the newest messages are discarded The max number of stored messages is 10 300 Execution error General execution error 301 PV abo
4. VOLTAGE PROTECTION LEVEL MAX SOURCE is optional VOLT PROTECTION LEVEL MAX Abbreviate VOLTAGE VOLT PROT LEV MAX Shortest form of command svolt prot lev max Small letters acceptable SDN NO The following are invalid forms of the command and will cause an error sCURRENT PROTECTION STATE missing parameter MAX or number CURRENT PROTECTION STATE MAX no spaces in command CURR PROTEC STATE ON PROTEC is not complete abbreviation CURR PROT STAT ON Colon required if SOURCE skipped 11 2 Configuring the Output 11 2 1 Set the Voltage Limit This command sets the voltage limit When the power supply is running in constant voltage mode this will be it s output voltage The voltage limit rounded to four digits may be viewed on the supply front panel by pressing and releasing the PREView button Syntax SOURce VOLTage LEVel IMMediate AMPLitude lt nn nn gt Parameter lt nn nn gt is volts the acceptable range is from 5 more than the under voltage UVL setting to 5 less than the over voltage protection OVP setting Example VOLT 18 5 Query VOLT will return 18 5 in the example this may be different than the actual output voltage Errors SYSTEM ERROR may return errors including 222 Data out of range 301 PV above OVP 302 PV below UVL 11 2 2 Set the Current Limit This command sets the current limit When the power supply is running in constant current mode th
5. NEL Auto Start Enabled O Lo E Foldback Enabled gt TO oo seh het FA hee Local Remote LOC Ee LOC T EA 0 0 mP FE Py os AE STAT OPER COND STAT OPER EVEN STAT OPER ENAB nn STAT OPER ENAB TDK Lambda Syst Err Queue of Nfol fEl riS j2j2 JE rfr 5 4 Blala LiL 2 20 ede ed SYST ERR ENAB SYST ERR Service Status Request Byte Enable Not Used 0 a Use 1 r System Error 2 sys H Questionable Summa 3 Que F gt Not Used 4 nu ae a 1 _ Standard Event Summa Ess F gt 0 Operational Summa SRE nn SRE STB Positive Logic 0 No Event 1 Event Occured Figure 7 Error and Status Registers 48 TDK Lambda 11 8 5 Read the Status Byte Register The Status Byte register is a summary of all events that have been enabled Figure 7 shows the commands that are used to enable events The Status Byte is a condition register that is reading it will not clear the contents To clear the Status Byte register the connected event registers must be read or cleared These are the bit assignments of the Status Byte o h Noted 2 2 4 SYS System Error at least one error in error queue 8 QUE Questionable Summary o 16 5 32 6 64 MsS__ Master Summary Status is set if any other bit is set in this register 7 18 OPR Operational Summary Z o o Syntax STB Response lt nnn gt a number from 0 to 255 Example 12 a supply fault had occurred and
6. For example the MEAS VOLT query will return a voltage measurement from any SCPI compliant instrument that has a volt meter The Virtual Instrument Software Architecture is a single interface library for controlling instruments over many types of communication busses In an automation program a resource descriptor string is given for each instrument The descriptor defines the instrument including it s address and bus type 65 66 TDK Lambda TDK Lambda 67 GLOBAL NETWORK TDK Lambda NORTH AMERICA TDK Lambda Americas Inc 405 Essex Rd Neptune NJ 07753 Tel 1 732 922 9300 Fax 1 732 922 1441 E mail sales us tdk lambda com www us tdk lambda com hp TDK Lambda UK Ltd Kingsley Avenue Ilfracombe Devon EX 34 8ES United Kingdom Tel 44 1271 856666 Fax 44 1271 864894 E mail powersolutions uk tdk lambda com www uk tdk lambda com FRANCE TDK Lambda France SAS ZAC des Delaches BP 1077 Gometz le Chatel 91940 LES ULIS Tel 33 1 60 12 71 65 Fax 33 1 60 12 71 66 E mail france fr tdk lambda com www fr tdk lambda com GERMANY TDK Lambda Germany GmbH Karl Bold Str 40 D 77855 Achern Germany Tel 49 7841 666 0 Fax 49 7841 500 0 E mail info germany de tdk lambda com www de tdk lambda com AUSTRIA TDK Lambda Austria Sales Office Aredstrasse 22 A 2544 Leobersdorf Austria Tel 43 2256 65584 Fax 43 2256 64512 E mail info germany de tdk lambda com www de td
7. 1 OFF ON gt Example GLOB OUTP STAT 1 or GLOB OUTP STAT ON 12 4 7 Global Reset Power Supplies This is the global version of the RST command in section 11 7 2 Syntax GLOBal RST Example GLOB RST 12 4 8 Global Save All Settings This is the global version of the SAv 0 command in section 11 7 3 Syntax GLOBal SAV 0 Example GLOB SAV 0 12 4 9 Global Recall All Settings This is the global version of the RCL 0 command in section 11 7 4 Syntax GLOBal RCL 0 Example GLOB RCL 0 12 4 10 Error and Status Registers The error and status registers described in sections 11 8 5 through 11 8 17 operate somewhat differently in a multi drop system A structural register difference is in all the RS 485 chained supplies the Operational Condition Event Register and the Questionable Condition Event Register are Ored together to generate an event in the LAN supply s Questionable Condition Event Register bit 0 This is called the ISUM bit and it may be used to set a bit in the Status Byte if an event occurs in the LAN or any RS 485 supply Other differences are The Status Byte and Standard Event registers are global These do not change as different power supplies are selected with INST SEL The Questionable Condition and Operational Condition registers are embedded in the selected supply These will change as different power supplies are selected with INST SEL Refer to the User Manual for the IEEE Interface for further details
8. DRIVERS ssccssscsssscsssccssccesscccssccesccssscessccessccesscessscessscessccesssessscessceessseees 31 AR Ea Eaa E E E A A E E EA E E E A ETE E EE E E 31 Be NART OMPA Y aara a E E eee aeseneoae 31 FS Opening the VISA CONNECCION sirsenis eaae EEE Ee OEE EEES EANA ATSE NEEE EE EEA 31 VAL COM CANNY Using VISA seenen aea EAE E ENAERE EOE EEEE ENSEN ESAE aSa near 31 8 PROGRAMMING USING IVI DRIVERG cssscsssscssscessccessccesccssccessccessccesscessscesscccssscesscsesscesssccsscsessssensees 32 Be FV NSS TOO ae E E 32 SRPNA E1818 t AAR EEE EENE ET EE IEE AEE EE E E E E EE E E E E 32 9 PROGRAMMING USING SOCKETS crsccicisccessscceszsctsescecasanescsuscevenesisastvacseiiesacaceiuasecbacaveusssuesesiuuaciessiuxesaiasesustes 33 IOKE DESNO eae a E EE E E TN 33 OD Communicating Using SOCK ON Sa sccrastacengecsecosessecsiancysrsaceoneasty oeveasestoacpinaioctotaus uaevnisandouns ssa cteastoantenatamsiee ner ea iaia 33 9 3 Special Requirements for Socket ProgramS scssssssssssssesesssscsssecsesesesessesesesesseescseseseeseseseeseseaesessesesescsesseseaeseseseees 33 9 4 Controller Access Single and Multiple Clients s sseseeessessesseessesssessessesseessessesseessesseoseeseeoseessesseoseeseesseosesseessessesse 33 9 5 Input Buffer Requirements sesseseesssessesssessesseessessesseessessesseeseessesseossessteeesstoseoseesseostosteseesstostosutoseeseesstosteseessesseeseeseesss 34 9 6 Message lerminatOrS seereis navy verir ENNE
9. If it does not see Troubleshooting section 15 3 Alternately the hostname may then be used for addressing the web page as shown below if the power supply is set for DHCP Auto IP and if NetBIOS naming service is running on the computer See Section 4 5 for a description of the hostname Home Windows Internet Explorer TDK Lambda The power supply s Home page will appear If it does not see Troubleshooting section 15 20 TDK Lambda 6 3 The HOME Page The following page appears when the web page is first opened or when it is refreshed TDK Lambda Genesys With ports for VISb ond Sacket clients Programmable DC Power LXI Welcome S VISA Name using TCPIP GEN40 375 Hostname 627 INSTR Figure 6 Web HOME Page VISA Name Using IP Address For automation programming VISA is a type of communication driver For LAN instruments the IP address may be used in the VISA resource descriptor See section 7 VISA Name Using Hostname For automation programming an alternate VISA resource descriptor using the power supply s hostname See section 4 5 RS 485 Address This address only applies to a multi drop chain of supplies This is the RS 485 address of the LAN supply also called the master supply To set this address on the front panel see section 12 2 2 Hostname A unique name for a device on a network The default hostname is described in section 4 5 and it is configured in section 6 6 2 If the hostn
10. Open Web using Laptop or Dual LAN Card Computer If you have a computer with two network cards the computer may not know which card to use when trying to open the Genesys web page Verify the two cards do not have over lapping IP address ranges otherwise it may be necessary to disable or disconnect the network card that is not being used If you have a laptop computer with an Ethernet jack and a wireless network it may be necessary to disable the wireless LAN port For running VISA programs see section 7 two network cards is not a problem because the VISA resource descriptor includes the network board identifier 15 7 Web Page Fields Show as Little Blocks The web pages have numeric fields such as the voltage settings If icons show instead of numbers then the Java Runtime Engine JRE may need to be installed on your computer If the JRE is already installed a slow network connection can also create this situation The Java Runtime Engine may be downloaded from www java com Java is a trademark of Sun Microsystems Also in the web browser you may have to enable Java scripts and Java applets With Microsoft Internet Explorer do this by opening the browser and on the toolbar navigate Tools gt Internet Options gt Advanced tab and scroll down to find Java Sun 62 TDK Lambda Internet Options General Security Privacy Content Connections Programs Advanced
11. PON lt lLast gt sCURR PROT STAT lt last gt VOLT LIM LOW lt last gt VOLT PROT LEV lt last gt The status and event registers are not affected by the recall command Syntax RCL 0 11 7 5 Self Test This is query to launch a simple self test It verifies the basic connections between the LAN microcontroller and the control board microcontroller The self test result pass or fail is read from the message queue If the self test failed and it returns 1 contact TDK Lambda Americas Inc Customer Service for further instructions Syntax TST Responses 0 when the self test passed 1 when the self test failed 11 8 Error and Status Commands Any program that operates a remote power supply should routinely verify that the supply is accepting commands as expected There is always a chance that the program sent a command incorrectly the supply is setsoa command cannot be carried out or a fault condition has shut down the supply A reliable program will check for these errors There are three methods for checking the Genesys power supply status e IEEE 488 2 Registers these are a few simple registers in which a bit is set because of a command error or instrument fault condition Little information about the type of fault is returned to the operator The registers are read set and cleared using the Common Commands these start with an asterisk e SCPI Registers these are an extension of the IEEE 488 2 register set SCPI adds regi
12. at power up The rear panel J3 ports for RS 232 and RS 485 do operate The power supply may be used in a chain of multi drop supplies see section 12 See the Technical Manual for the Genesys Power Supply for the description of the RS 232 485 mode TDK Lambda 3 3 2 Link and Activity LED this small LED embedded in the RJ 45 socket glows green when the connection is made to an active network and it blinks when any message packets are detected 3 3 3 Collision LED this small LED embedded in the RJ 45 socket blinks amber when the LAN packets are corrupted by collisions 3 3 4 LAN Status LED This is a two color LED to the left of the RJ 45 connector It shows e Normal Operation Steady green The power supply has an active LAN connection e Device Identify Blinking green The identify function is turned on from a remote computer using the web page or a SCPI command The front panel blinks along with the rear It is used to identify one power supply in a rack of instruments The blinking is turned off by the web page by sending another SCPI command or by changing any front panel control In multi drop chain only the master LAN supply blinks e LAN Fault Steady red Shows the LAN mode is not enabled the LAN connection was never made or that the LAN connection was made and then broken TDK Lambda 4 CONNECT TO NETWORK 4 1 LAN Cable The LAN cable must be supplied by the customer It may be a standard straight patch CA
13. bits are set to 1 when the mode occurs and cleared when the mode turns off The values are read only These are the bit assignments of the Operational Condition Condition Register VALUE SYMBOL DESCRIPTION constant voltage operation 1 constant current operation NFLT 1 No fault is set when all faults cleared os li Not used 1 Auto start is enabled 1 Foldback protection is enabled oO AST FBE o Not used toc ooo 1 Local mode 0 Remote mode 50 TDK Lambda Syntax STATus OPERation CONDition Example STAT OPER COND Response lt nnn gt a number from 0 to 255 Example 128 local mode with the output off because CV and CC both zero 11 8 12 Set the Operational Condition Enable Register When one or more bits in the Operational Condition Condition Register see 11 8 11 above are set a bit can be set in the Status Byte STB see section 11 8 5 This is done by setting bits in the enable register Changing the value of the enable register has no affect on the value in the condition register Syntax STATus OPERation ENABle lt nn gt Parameter lt nnn gt is anumber from 0 to 255 The bit assignments are the same as the table above Example STAT OPER ENAB 1 will cause bit 7 in the Status Byte to be set if the supply goes into constant voltage mode Query STAT OPER ENAB will return 1 in the example 11 8 13 Read the Operational Condition Event Regi
14. fault to be latched as an event the event bit must be enabled as described in section 11 8 15 The bit assignments are the same as the Questionable Condition Condition Register described in section 11 8 14 above Syntax STATus QUEStionable EVENt Example STAT QUES Response lt nnn gt a number from 0 to 4095 Example 10 the supply went into fold back fault then the AC voltage dropped 52 TDK Lambda 11 8 17 Enable All the Event Registers This command that will enable some of the events for the operational section 11 8 12 and all of the events for the questionable section 11 8 15 registers Sending this command is the same as sending STAT OPER ENAB 132 and STAT QUES ENAB 4095 Syntax STATus PRESet Example STAT PRES Query This command has no query form 53 TDK Lambda 12 RS 485 MULTI DROP COMMANDS 12 1 Introduction The Genesys power supply LAN option allows you to control up to 29 other supplies which do not have the LAN option installed All are controlled through one IP address from the supply with the LAN option This is called the Multi drop configuration The Ethernet cable goes to the LAN supply All the other supplies are connected using a RS 485 Serial Link Cable between the J3 OUT to J3 IN sockets The multi drop feature adds the ability to operate all the linked power supplies with one global command CAUTION when using multiple LAN controllers with Multi drop Only
15. fields are disabled gray Controller Access Select the security feature for One Controller Only or Multiple Clients The multiple client setting is needed to allow more than one controller connection at a time and to enable UDP socket connections See section 9 4 for details Apply Click this button to save the new settings Close Click this button to close the window 6 6 3 LAN Advanced Page Click the LAN Advanced button to view and set four advanced LAN settings Present LAN Configuration Se f gt i lot LAN Keep Alive If you are logged in as an administrator this is how many seconds the web pages may be unused idle before the power supply automatically logs you out The default is 1800 seconds 30 minutes Ping Server Ping is a network utility that allows the a computer to verify communication with the LAN power supply This service may be disabled in the Modify panel Auto Negotiate This shows what network speed the LAN card is allowed to operate at VXI Discovery This is a protocol which allows the network server to detect what instruments are connected to the LAN It may be disabled in the Modify panel for security reasons Auto MDIX This service is always enabled in the power supply The power supply LAN connection will always detect a patch or cross over cable Modify After logging in click this button to open the window shown below 28 TDK Lambda 6 6 4 LAN
16. port 8003 for TCP sockets or port 8005 for UDP sockets are exposed to WAN connectivity 36 TDK Lambda 11 SCPI COMMAND REFERENCE 11 1 Command Syntax 11 1 1 General SCPI Rules Terminator For VISA no terminator is required For sockets a terminator is required Acceptable terminators are line feed carriage return or semi colon Characters commands are made of printable letters numbers soaces and some punctuations Letters may be capital or small commands are not case sensitive Spaces there must be no spaces within the command There must be a space between a command and it s parameter or setting Abbreviations most SCPI words have an abbreviated form The full word or the full abbreviation must be used no partial abbreviations are allowed Numbers numbers may have leading and trailing decimal zeroes up to 12 characters total The is optional for positive values The decimal point is optional for whole numbers Commas for European style decimals are not allowed Exponential numbers example 1 35E 2 are not allowed Errors If a command syntax is not correct or if a setting is not acceptable then the command is ignored To check if the command is accepted it is necessary to read from the SYSTEM ERROR queue see section 11 8 1 The Standard Event Status Register also has a bit to indicate command errors ESR see section 11 8 7 Command Queries almost every command has a query form to read
17. rear panel SW1 bit 6 to UP Connect the RS 485 Link Cables from the master s J3 OUT to the slave s J3 IN Power up the supplies Set the supply s RS 485 address as described in section 12 2 2 While you are setting the address it is required to also set the BAUD rate to 19 2K by turning the current encoder 12 3 3 Optional RS 485 Terminator For very long RS 485 cable distances or if many supplies are chained together a signal terminator may added to improve signal integrity The terminator is plugged into the J3 OUT of the last supply in the chain see diagram above To make a terminator mm O CC W A Crimp a short cable to a RJ 45 connector or just use the end of a LAN cable B Use two watt resistors recommended value is 120 ohms and solder them from pin 3 to pin 6 TXD to TXD from pin 4 to pin 5 RXD to RXD C Although the RS 485 bus should not be at hazardous voltages insulate the terminator properly for your application 12 4 Multi drop Programming Using SCPI Commands 12 4 1 Selecting One Power Supply in a Multi drop Chain All the SCPI commands in section 11 may be sent to any one of the supplies in an RS 485 chain by first sending the INST SEL address command All commands and queries will then apply only to the selected supply until a new INST SEL is sent At power up the LAN master supply is automatically the one selected 55 TDK Lambda After sending INST SEL it is recommended th
18. see section 4 4 the power supply will wait a full 40 seconds to assign an IP address after power up C There could be an address collision on the network where two devices on the network have the same IP address If the power supply detects this it will refuse to assign an IP address and it stays all zeroes This only occurs if the power supply is in Static addressing mode see section 4 4 To correct this situation do either of i Do a front panel LAN Reset see section 5 3 The power supply will try to get an address from a network DHCP server or it will create its own address in the 169 254 xxx xxx subnet If this subnet is not the one you are using then use the front panel to set an IP address that is compatible with your network see section 5 2 ii Disconnect any LAN device that may have a conflicting address from the network Switch the power supply off and on After 15 or 40 seconds the power supply will acquire its static address 15 3 IP Address is Three Zeroes and a Number When viewing the IP address on the front panel hold the FOLD button see section 5 1 and you see the IP address is 0 0 0 x then you have to do a LAN Reset see section 5 3 This situation occurs when after first powering up you are viewing the IP address the address is still zeroes and you turn the current encoder and press the FOLD button This sets a static address see section 5 2 15 4 Cannot Communicate to the Power Supply If the LAN Stat
19. the SYSTEM ERROR messages TM Syntax SYSTem ERRor ENABle Example SYST ERR ENAB Query This command has no query form 11 8 3 Read SCPI Version This query returns the SCPI version that the Genesys power supply is compatible with Syntax SYSTem VERSion Example SYST VERS Response lt SCPI version gt Example 1999 0 46 TDK Lambda USING THE ERROR AND STATUS REGISTERS The SCPI error and status registers report many conditions statuses and events into short numeric codes Momentary events may be latched so the remote computer can read about them at a later time A fan out architecture is used to summarize all the data into one Status Byte register A N The Genesys power supply with the LAN option does not support the service request event defined in the Status Byte register There are three types of registers Data as in a bit is set high or low flows top to bottom in the following list See Figure 7 for the diagram Condition Registers contain bits that are set when a condition or error occurs The bits are only cleared when the condition or error is cleared The contents may be read but not changed Enable Registers individual bits may be set to allow the status and errors to be latched for reading even after the status or error condition has cleared The power up default is all zeroes that is no latching occurs Event Registers bits that are set when an event or error occurs The bits are cleared w
20. the network router to allow the power supply to communicate outside of the local subnet DNS Server Address of the server running the Domain Naming Service This is used for hostname addressing Hostname The power supply hostname may be used instead of the IP address to create a communication link The default hostname is derived from the model and serial number see the hostname in section 4 5 or it may be changed in the LAN Configure Modify web page 26 TDK Lambda Description By default this is Genesys Power Supply but it may be changed in the LAN gt Configure gt Modify web page Controller Access The One Client Only setting is the default setting for the highest networking security This setting allows only one TCP socket to be open at a time and it disables the connectionless UDP and Raw sockets See section 9 4 below Modify After logging in see section 6 4 click this button to open the window shown below 6 6 2 LAN gt Configure gt Modify Page If you are logged in and click the Modify button on the LAN Configure window the following pop up window appears On this window you may enter new values for the LAN settings The available fields depend on the selection of DHCP Assigned AUTO IP or Static IP Changes to these setting will not take place until the Apply button is clicked Note After changing the LAN settings other than the description th
21. there is some error which may be read using the SYSTEM ERROR query 11 8 6 Set the Service Request Enable Register The IEEE 488 2 and SCPI specifications defined this register so instruments may generate a service request when selected events occur The Genesys power supply LAN option does not support the service request feature although the SRE command will set bit 6 in the Status Byte Syntax SRE lt nnn gt Parameter lt nnn gt is a number from 0 to 255 The bit assignments are the same as the Status Byte in the table above Example SRE 255 will cause Status Byte bit 6 to be set if any other bit is set Query SRE will return 172 in the example bits 0 1 4 and 6 are not settable in the SRE register 11 8 7 Read the Standard Event Status Event Register This is a basic status and fault register that was first defined in IEEE 488 2 It is an event register which means bits are set to 1 when a condition occurs and they are not cleared until the register value is read using the ESR query or the CLS command These are the bit assignments of the ESR register BIT 0 Noted o O 0 Notused o PON Power On Set once when power is switched on 49 PC YE XE ME PON 7 a TDK Lambda Syntax ESR Response lt nnn gt a number from 0 to 255 Example 32 an illegal command was received 11 8 8 Set the Standard Event Status Enable Register When one or more bits in the Standard Event St
22. too many characters 343 Internal timeout LAN card did not receive response from power supply before timeout period 344 Internal checksum LAN card received checksum error from supply 345 Internal checksum error LAN card detected checksum error in message from supply 399 Unknown Error Error not known 59 TDK Lambda 14 SAMPLE PROGRAMS 14 1 Web Downloads Refer to Lambda website for the latest support software at http www us TDK Lambda com HP product_html drivers htm Downloads include GUI program This is a Graphical User Interface program that gives you remote control of the power supply using the LAN network IVI COM Drivers These are Interchangeable Virtual Instrument drivers that allow you quickly write automation programs in National Instruments LabView Microsoft Visual Studio and other environments Some Getting Started tutorials are available See section 8 for more details Socket Program Examples Programs using TCP and UDP sockets are available for Visual Studio 2005 C with NET drivers Visual Studio 6 C with Winsock drivers and Linux C VXI 11 Discovery Utility This is a simple utility program that will send a broadcast packet onto the LAN network and check any responses from VXI 11 compliant instruments The utility will display a list of detected instruments along with the IP and manufacturer identity information The Visual Studio 2005 C solution sou
23. type any SCPI message into the top text box Then click the Send and Read button For commands there is no response For queries the response is shown in the middle text box You may read any System Error message by clicking the Read Errors button The error message or No error will show in the bottom text box otherwise see section 11 8 1 and section 13 25 TDK Lambda 6 6 LAN Page When the LAN tab is clicked the following web page opens This page and it s sub pages allow you to view and configure the power supply s LAN settings 6 6 1 LAN Configure Page When the LAN tab is selected the Configure panel opens TDKLambda Genesys With ports for VISA and Socket clients Programmable DC Power LXI Present LAN Configuration IP Address Source DHCPIAUTOIP IP Address 10 2 26 61 Subnet Mask 255 255 255 0 Default Gateway 10 2 26 35 DNS Server 10 2 26 30 Hostname GENH30 25 30F Description Genesys Power Supply Controller Access One Client Only The following settings are shown on the LAN Configure web page IP Address Source Displays the way the IP address was selected Options are DHCP Auto IP and Static IP IP Address Displays the IP address assigned to the power supply through either DHCP Auto IP or Static IP sources Subnet Mask Displays the subnet mask assigned to the power supply through either DHCP Auto IP or Static IP Default Gateway Address of
24. 1 1 for network configuration k A LAN Status indicator shows when the network connection is established IVI COM and IVI C drivers are available for download m Easily write custom automation programs Full remote programming functions n Uses SCPI command language an instrumentation standard o Compatible with VISA drivers an all the test amp measurement utilities p TCP and UDP sockets will support PLCs Linux and other non VISA controllers Front Panel features q View IP and MAC address on front panel r Set the complete IP address on front panel u Ethernet RJ 45 connector standard 8 pin phone jack for LAN v Link and Activity LED on RJ 45 connector w LAN Status LED shows LAN fault and is a 2nd Blink Identify on rear panel x A switch disables the LAN to allow use as an RS 485 Multi drop slave RS 485 Multi drop Chain y Allows connecting up to 30 power supplies using simple Link cable z One LAN IP address shared by all RS 485 power supplies aa The LAN option is not needed in the RS 485 power supplies but they must be Multi drop enabled Trademark Notices LXI is a trademark of the LXI Consortium Inc Microsoft and Windows are trademarks of Microsoft Corporation TDK Lambda 2 SPECIFICATIONS 2 1 Power Supply Specifications When using the LAN the power supply ratings and accuracies are the same as for the digital remote programm ing using RS 232 or RS 485 See the Technical Manual for Genesys P
25. 171 www tdk lambda com sg INDIA TDK Lambda Bangalore Office 526 Ground Floor 10th Main 7th Cross Jeevanbhimanagar Bangalore 560 075 MALAYSIA
26. Advanced Modify Page In the window below you may enter new values for the LAN settings Changes to these setting will take place when the Apply button is clicked The web page does not have to be re started after changing these settings Advanced Lan Modify Windows Internet Explorer E Eg le http 10 225 26 61 AdvancedLanModify html z The window s fields are described in section 6 6 3 above 6 6 5 LAN Users Page This page allows you to create password protection for the web pages There is no password protection for automation programming with VISA or sockets see section 7 and section Error Reference source not found By default the old password is blank The new password must be four or more characters long Reset the password once a password is applied it may be changed by using this screen but it can only be removed by performing the LAN Reset function from the power supply front panel see section 5 3 Change Password 29 TDK Lambda 6 7 HELP Page A Help tab is available This page is a set of Internet links to TDK Lambda Americas Inc website pages Your network administrator must assign the power supply s default gateway see section 6 6 2 and give privileges to view and download from the internet 30 TDK Lambda 7 PROGRAMMING USING VISA DRIVERS 7 1 VISA Description In the test and measurement industry Virtual Instrument Software Architecture
27. For example ifthe hostname is changed to Heater 3 then a control program can senda command to Heater 3 anditis easy understand After a LAN Reset is done see section 5 3 the power supply will create a default hostname based on the model and serial number of the supply The default hostname is in the format lt Product gt lt Voltage rating gt lt Current rating gt lt last 3 digits of serial number gt If the rating has a decimal point substitute p for the decimal point For example Model Serial Number Default Hostname GEN40 38 LAN 047Z120 0136 GEN40 38 136 GEN300 5 LAN 048Z084 0028 GEN300 5 028 GENH30 25 LAN 0482Z105 0026 GENH30 25 026 The power supply may be set to one of three network modes each with a different way to use the hostname This is shown in the table below DHCP GENvv aa nnn Auto IP GENvv aa nnn Static IP None hostname Hostname Default Hostname see above see above cannot be used Hostname Protocol Hostname by NetBIOS Hostname by NetBIOS None hostname cannot be used Hostname on Web Pages Shows IP address on Home page Shows hostname on LAN Configure page Shows IP address on Home page Shows hostname on LAN Configure page Shows IP address on Home page Hostname disabled on LAN Configure page TDK Lambda 5 LAN SETUP 5 1 View the IP and MAC Add
28. Over temperature fault FD Fold back protection fault OVP Over voltage protection fault sO Shut off fault using the J1 analog input OFF Output Off using the front panel button ENA Output Enable fault using the J1 analog input INPO INPO 2to1s na 0 Notused o O Syntax STATus QUEStionable CONDition Example STAT QUES COND Response lt nnn gt a number from 0 to 4095 Example 64 operator turned the output off using the front panel OUT button 11 8 15 Set the Questionable Condition Enable Register When one or more bits in the Questionable Condition Condition Register see section 11 8 14 above are set a bit can be set in the Status Byte STB see section 11 8 5 This is done by setting bits in the enable register Changing the value of the enable register has no affect on the value in the condition register Syntax STATus QUEStionable ENABle lt nn gt Parameter lt nnn gt is anumber from 0 to 4095 The bit assignments are the same as the table above Example STAT QUES ENAB 4095 will cause bit 3 in the Status Byte to be set if the supply shuts down for any fault Query STAT QUES ENAB will return 4094 in the example bit 0 always 0 for single LAN supply 11 8 16 Read the Questionable Condition Event Register l ny This is a fault event register which means bits are set to 1 as faults occur and they are not cleared until the register value is read or the CLS command is sent For the
29. Power tab is clicked the following web page opens This page and it s sub menus allow you to operate the power supply and adjust it s output settings 6 5 1 DC Power Output Page When the DC Power tab is selected the Output soft front panel GUI loads first TDK Lambda e Genesys With ports for i z VISA and Secket clients Programmable DC Power LXI Select Multi drop i O RS 485 Address CENOG Selected GENH30 25 LAN DC Power Measurements First select the desired power supply with Refresh List When this button is clicked the web page will scan to find connected Multi drop power supplies and put the discovered addresses into the listbox This button only applies to a multi drop chain as described in section 12 Select RS 485 Multi drop Address This address is described in section 12 2 2 This address only applies to a multi drop chain of RS 485 supplies If there is no multi drop only the address from the single LAN supply is available After the desired power supply is selected the web page shows Blink Identify When this button is clicked ON the web page LED blinks the selected power supply front panel blinks and the rear panel LAN LED blinks This function allows you to quickly identify which power supply is being communicated to in a rack of instruments In a multi drop chain only the master LAN power supply will blink The blink identify is turned OFF by clickin
30. Send native RS 232 commands with abilities beyond SCPI WEB PAGES Multiple users Multiple web pages can be open at once Identity Identify power supply model serial number revision etc LAN Configuration View and set LAN configuration Active Control GUI Program and read output settings Send Commands Send SCPI commands read errors Help Link to TDK Lambda web sites TDK Lambda SUPPLY CONFIGURATIONS Local Control LAN Remote Control RS 232 485 Control JT Analog Control Series Parallel Supplies Advanced Parallel INDICATORS IP and MAC Address Multi drop Address Link LED Activity LED LAN Status LED Blink Identify Local Remote LED BUTTONS SWITCHES LAN Reset IP Address Multi drop Address LAN RS Select SECURITY Web Page Password settings Single Client Only Block UDP Sockets Disable VXI 11 Discovery Disable Ping Server COMPLIANCE LXI UL IEC TUV supply with LAN installed CE ROHS etc Supply may be run from front panel even if LAN is monitoring Supply may be controlled and monitored through LAN LAN may be disabled to use the standard RS 232 485 ports LAN may monitor supply while analog controller sets output Rules for standard Genesys supplies apply to LAN supplies Rules for standard Genesys supplies apply to LAN supplies View addresses on front panel View RS 485 address on front panel Indicates the Ethernet cable connected at both ends Indicates when LAN packets detected Red green indicate
31. T 5 or better network cable or it may be a crossover cable where the pins are reversed on one end The cable type is auto detected by the power supply The serial link cable 0 5 m long provided with the Genesys power supply cannot be used for a LAN connection 4 2 Types of Networks There are basically two types of networks that are discussed here 1 NETWORK WITH A SERVER this is the typical local area network with a server computer and network administrator to keep it running The server will download the IP address and other settings to the power supply Ethernet Hub Computer with a web browser or CAT 5 program to send SCPI commands Cables Network Server Genesys with LAN Option Ethernet IP address is assigned by the server Hub using DHCP or the Genesys may be set for a static IP address Figure 4 Server Network Connection Diagram 2 PEER TO PEER NETWORK this is typically the situation when you connect the Genesys supply directly to a computer that is not a network server The power supply will configure its own IP address and other settings CAT 5 Cable a Genesys with LAN Option IP address is assigned using an Auto IP address inthe range 169 254 xxx xxx Computer with web page browser or program to send SCPI commands The computer is not connected to any other network Figure 5 Peer to Peer Connection Diagram TDK Lambda 4 3 Power up the LAN Power Supply Th
32. VISA is a popular framework that includes hardware drivers configuration utilities and connection managers A variety of Communication busses are supported VISA drivers are available from several instrument vendors Any programming language that supports Windows COM or DLL libraries can call the VISA functions VISA drivers may be downloaded for Windows Linux and MAC OS Some licensing issues may apply Remote programming uses a computer s LAN connection to send text commands to the power supply and to read text responses back The format of the text messages is called SCPI see section 11 7 2 VXI 11 Compatibility VXI 11 is a protocol that allows communications between a computer port and an instrument VISA is built upon the VXI 11 specification The Genesys power supply is compatible with the VXI 11 protocols o VXI 11 Device_link Open link to instrument o VXI 11 Device_write Write text to the instrument o VXI 11 Device_read Read text from an instrument o VXI 11 Destroy_link Close link to instrument 7 3 Opening the VISA Connection Test and automation programs may easily be written if they use the VISA libraries The supported VISA functions include Open Read Write and Close A VISA resource descriptor is used to describe a particular supply For a Genesys LAN power supply the descriptors are found on the supply s Home web page The VISA resource may use the supply s IP address or hostname Example VISA resource descr
33. a typical default IP address 11 6 4 Read the MAC Address The MAC address may be read with this query Syntax SYSTem COMMunicate LAN MAC Example SYST COMM LAN MAC Response The MAC address string 17 characters long Example 00 19 9 00 24 3b is a typical default IP address 11 6 5 Reset the LAN Settings WARNING Sending this command could disable the LAN connection to the power supply This command will reset the LAN settings to the factory default state The effect of this include changing the IP address and hostname so LAN communication could be lost Therefore only use this command as a diagnostic tool See section 5 3 for a description of the LAN reset condition Syntax SYSTem COMMunicate LAN RESet Example SYST COMM LAN RES 11 6 6 Serial Command Pass Through The Genesys power supply RS 232 485 serial command set has several functions that cannot be implemented by the LAN SCPI command set For example power supply calibration is done using the RS 232 port so the LAN port has no calibration commands The serial command pass through allows any serial command to be sent through the LAN SCPI port The response message from a pass through command is the same response as seen over the serial port Unlike the SCPI commands all pass through commands have a response message that may be read back Refer to the GenesysTM Technical Manual for a description of the RS 232 amp RS 485 Remote Control command set For s
34. aN ESENE E NANESE NEESER EENE NENNE EEEN NOES 34 OF NZ SUN TEP SOCKS E A A E TA A A E E E 35 NI SVS UDP SOCK OE E N E nse uesussaeasavse nestor eetimceevseesatenieeneeresnneceuen 35 DF OT ONS E se A A AE cusses oxen ees T E A vices O A E A A E E A T 35 TDK Lambda TOC ONNECTINGO OVER WAN ourer arinin nen Ern EE E A A ENO 36 10 1 View Web Pages Over WAN s ssssssesssessesseessesseessesssesseossenseesecoseeseeosersseoseossesseesseoseesscoseesseoseosseoseesseeseesstoseesstoseessesseesseeseesseoseesseossrsss 36 10 2 Use Sockets Over WAN sesssesssesssesssesssesssessseosseesseesssesseessseosseosseosseosseosseosseosseosseosseosseosseosseesseesseesseesseesseroseesseesseroseesseroseeoseroseeosees 36 TeSCPRCOMMAND REFERENC E sions ssir enmir irian r Ee inai s AEE ENEE TEEN OE AVAE 37 WARE AVG SY a E OEN EE E A E E N E EA O EAA A E AE TE 37 Te CFA I DE OUDE osna AEE ENA EATA EA ESATEA 38 11 3 Measuring the IT OI asinna aE AE EEEREN EAA EREE EAEAN EEEN 39 TLA Operating Modes siirsin ennn NAS EER AE S T 39 UT OUI POC ON errr AE E EAA EA AE 41 TLO LAN Specie COP INOS ararnir teen stent EEE AN ENEE O tee 42 MFA ES SMA ANOS E A E A AA AE AEE N E E N 44 11 8 Error and Status COMMandS e esssesssesssesssesssesssessseosseossessssosseesseessseossessseosseosseosseosseossrosseosseosstosstosseosseosseosstosstosseosseesstosstesseesseeeseees 45 12 R5485 MULTIDROP COMMANDS cos crscasasecsseisasevaeccsecnsasecueensnachenceencse EAE EEEE E EEEE NEEE 54 L ME
35. ame is not registered with the network name server using reverse DNS rDNS then the IP address will be shown here Auto MDIX The LAN will automatically detect if a patch or cross over LAN cable is used 21 TDK Lambda Auto Negotiate The LAN will automatically adjust it s speed to the fastest available 6 4 Logging In To change power supply output or the LAN settings a user must first log in Click the Login button at the top left side of the web page and a pop up window appears The only acceptable user name admin is shown The password may be set or removed on the LAN gt Users web page A front panel LAN Reset will clear the password see section 5 3 E Login Windows Internet Explorer Siz Ed 6 4 1 Login Rules Any number of users may view the web pages of a power supply at the same time However the update rate becomes slower as more web pages are opened Only one user at a time may be logged in to modify the power supply settings If an automation program with VISA or socket connection is running then you may view the web pages but you cannot login to change any settings Ifa user is logged in then a VISA or socket connection cannot be opened by an automation program A user may logout by clicking the Logout button by closing the web browser or by leaving the web browser idle for LAN Keep alive seconds see section 6 6 3 22 TDK Lambda 6 5 DC Power Page When the DC
36. amming and the analog J1 programming IP and MAC Address RS 485 Address LAN Reset for Multi drop A o 00 wr O XO AZ c ALARM FINE PREV M UVL FOLD REMILOC OUT 5 COCO COM Mo Press amp Hold for 3 seconds Press amp Hold for 3 seconds Press amp Hold for 3 seconds Release Press again Rotate Voltage encoder to Rotate Voltage encoder to See rES 0000 see IP and MAC addresses set the RS 485 address Rotate Current encoder to change IP address Figure 1 Front Panel LAN Features LAN Enable Link and Activity Collision Switch LED LED Green Amber Showing LAN Enabled DE N LAN Status RJ 45 LED Socket Figure 2 Rear Panel LAN Features TDK Lambda 1 2 Feature Summary Communicate over any standard TCP IP network a LAN Local Area Network b WAN Wide Area Network c Communicate across the world using the Internet Web page viewable with any web page browser such as Internet Explorer d Configure the network connection settings e Active web page GUI that programs and reads the power supply output and status f Security settings to block multiple controllers and risky protocols g Optional password protection prevents unauthorized operation LAN Protocols h VISA drivers TCP and UDP sockets are supported i VXI 11 Discovery and ping server are supported a Class C j Conforms to LXI standards revision
37. an three be open at the same time 33 TDK Lambda The rules for the One Client Multiple Clients are One Client Only Multiple Clients Web Page Multiple web pages may be open at any time Not logged in You may view but cannot change the power supply operation Web Page You cannot log in if a VISA or socket port is already open Logged in as admin If you are logged in any other connections are blocked VISA Connection Only one VISA port may be open at one time TCP Socket One TCP Socket Multiple TCP and UDP sockets may be opened If no VISA may be opened at the same time UDP Socket or Admin Web is opened if no VISA or Admin Web is UDP sockets are blocked opened 9 5 Input Buffer Requirements With a controller using TCP or UDP sockets the power supply can receive commands much faster than it can process the commands To make sure the Genesys LAN is not overloaded it is required that the controller sometimes sends a query and then waits for the response The response is the acknowledgement from the Genesys that it has finish processing all commands When using sockets no more than Twenty SCPI commands may be sent before a query must be sent This is to prevent the controller PLC from sending commands faster than the A N power supply can process them It is recommended that your controller routinely sends SYST ERR This query takes little time 30 mSec and it verifies that all commands have been a
38. are a lower level LAN protocol that are universally available in all operating systems and programming environments 9 2 Communicating Using Sockets Communicating through sockets involves opening a socket connection and sending SCPI text commands and reading the text responses see section 11 The functions that a programming language uses to manage the socket is called the TCP stack The basic socket calls for any language are create connect send read and close The exact functions depend on the programming language Some socket examples can be found at the TDK Lambda website http www us tdk lambda com hp register htm There are two types of socket protocols which may be used TCP and UDP Each has its own port number as described below 9 3 Special Requirements for Socket Programs This section applies to Genesys LAN with firmware revision that has LAN 2 1 as seen on the IDN response or web Home page 3U 5 1 4 LAN 2 1 0 1 9 4 Controller Access Single and Multiple Clients The web page has a security setting to limit or enable the types of connections and numbers of control computers called clients that may be connected at one time See sections 6 4 and 6 6 2 for instructions on how to log in as the administrator and make this setting NOTE the performance of the Genesys LAN interface is impacted as more web pages ports and sockets are opened at the same time It is recommended no more th
39. at you verify the command by sending INST SEL or SYST ERR otherwise the next commands will go to the wrong power supply 12 4 2 Global Commands in a Multi drop Chain The GLOBAL commands affect all of the chained supplies at the same time including the LAN supply There are differences between a normal SCPI command in section 11 and a global command The differences are There is no SYSTEM ERROR response message see section 11 8 1 if one or more supplies cannot execute a global command It is required that the user s application add a 200 millisecond delay after a global command before sending any other messages This is because there is no feedback from the multi drop chain to indicate the command is still being processed There is no query version of these commands Global settings must be queried by selecting one power supply and reading it s setting The error and status registers operate differently See section 12 4 10 for details The global commands are not SCPI compliant The global commands do not affect which power supply has been selected using the INST SEL command For example if the following commands are sent INST SEL 4 VOLT 50 GLOB VOLT 70 wait 200 mSec VOLT 90 then all the supplies on the multi drop chain will be set to 70 volts except the supply at RS 485 address 4 will be set to 90 volts after the global command another INST SEL was not required 12 4 3 Selecting a Supply This c
40. ats aueisiasscavstacseveucautsseanes 11 31 A Variety of Control Methods ceri henienicatermtnenacrannsdaminsenieataninninaimaadnuaamiee 11 SL LAN LOCI OF 56 Wal AE E amen nEenERES 11 3 3 LAN Option Rear Panel ViEW saccsernceesneiavaedectsrmuesevnteatesinnenaneniaionniaiasniner anette nntiueirainnes 12 4 CONNECT TONETWORK gsasscccacsccencosscicsesncateuscoesctcasiscisass cccvaipsceesisasiccontisauetsasvies avestateassuensssivescusessueucniaseavents 14 ARLAN CADIC RE E N E E E 14 A SS OT INGTON S era eiosas erties capa anieinned aera een 14 43 Powerup the LAN Power SUDDIV cxssssseicasenscitecncrcsares avtecsarsteeninemiennveceustnansenaantnuriananmnaenaeivananat 15 Pheer UP E O D E EEA E A TA E atari nes notte ners TE AE O a ere 15 BY Ea AAN 5 NE E N A A E O E T E NNS E A A mans 16 PLAN SETUP serre 17 5 1 View the IP and MAC Addresses ss sssessessesseessessesseessesseoseeseesscessesseoseeeesseoseoseessesseoseeseesscessesseoseeseesseoseoseessesseosersseese 17 22 Change NEP Adare S cerien rran ER aE EEN Ea EE ENARA NEEE AEREA SEER 18 ANRO a E E E E O OE EE ET E 19 O WEB PAGE Saana EESE EEEE E E 20 e Benehito Wep Paga rerseour aa aE 20 6 2 Opening the HOME Page esac encesneniceccinene nurs R NRE 20 Gi TS TOV Pog eaae E E EEE EE E tare E 21 OA ME GTC MA ences E E E ER 22 Oh DC POWO T IE ar A E EAE A NEA E EEA EE T E 23 LIN IOE aaan EA E NE EAN AEN EN A A 26 STA aE E AN EE AE A AAE A A AA E E O A A ENEN A E N E cea 30 7 PROGRAMMING USING VISA
41. atus Event Register ESR see above are set a bit can be set in the Status Byte STB see section 11 8 5 This is done by setting bits in the enable register Syntax ESE lt nnn gt Parameter lt nnn gt is anumber from 0 to 255 The bit assignments are the Same as the ESR in the table above Example ESE 60 will cause bit 5 in the Status Byte to be set if there is a query error fault shut down execution error or a command error Query ESE will return 60 in the example 11 8 9 Enable the Operation Complete This command will cause bit 0 of the Standard Event Status Register to go to 1 when all pending commands are completed Because of the Genesys power supply architecture this bit will go to 1 when the OPC is received even if the output is in transition because of a prior command Syntax OPC 11 8 10 Read the Operation Complete This query will read back if all pending operations are completed This query will always return 1 even if the DC output is in transition because of a prior command Syntax OPC THE SCPI ERROR AND STATUS REGISTERS 11 8 11 Read the Operational Condition Condition Register This register reports several operating modes and settings of the power supply Although separate SCPI commands may also report this information the register is beneficial because it may allow any brief mode change to be latched into an event register for later reading q yn This is a conditional register The
42. back the command s last setting The query form replaces the command s parameter with a question mark No space is allowed between the command and the For example if the command VOLT 23 is sent the query form VOLT will respond with 23 Multiple Commands in One Line Several commands may be sent as one line if they are separated by a semi colon These are also called concatenated commands If one of the commands returns an error the subsequent commands will execute if possible Do not put two queries in one concatenated command because the response from first query cannot be read back 11 1 2 Document Syntax Courier Font Represent SCPI commands or responses ABBReviations Capital letters are required small letters are optional Square Brackets Items in square brackets are optional Angle Brackets lt gt Items in angle brackets are command parameters Bar Vertical bar means OR select one of either item 1 0 ON OFF means 1 or 0 or ON or OFF acceptable Asterisk Required identifier for IEEE 488 2 common commands Whole Numbers nn Whole numbers with no decimal point allowed Decimals nn nn Decimal numbers with optional decimal point 37 TDK Lambda 11 1 3 Examples of Alternative Forms of SCPI Command For a command is described as SOURce VOLTage PROTection LEVel lt nn nn MAX gt The following are correct forms of the same command SOURCE VOLTAGE PROTECTION LEVEL MAX longest form of command
43. be required to AC cycle the power supply off and on This ensures a new network connection is established with the reset values The default LAN settings are DHCP is enabled If DHCP fails to get a lease the auto IP settings will be obtained IP address 169 254 xxx xxx see section 4 4 Subnet mask 255 255 0 0 Default gateway 0 0 0 0 DNS Server 0 0 0 0 Hostname GENvvv aaa sn see hostname in section 4 5 Description Genesys Power Supply Controller Access One Client Only Ping Server Enabled Keep Alive 1800 Seconds 30 minutes Auto Negotiate Automatically select network speed VXI 11 Discovery Enabled Password None TDkK Lambda 6 WEB PAGES 6 1 Benefit of Web Pages The GenesysTM web pages are useful for e Reading the supply s model identity revision and LAN setup information e Configuring the LAN connection e Programming and reading the supply s DC output This is all done graphically There are no commands to look up 6 2 Opening the HOME Page Once the rear panel LAN Status LED has turned green see Section 3 3 4 you may open the Genesys web page 1 Read the IP address from the supply s front panel by holding the FOLD button see section 5 1 for details 2 Open a web page browser program such as Internet Explorer or Netscape Navigator Type the power supply s IP address as shown below Click the GO button Home Windows Internet Explorer The power supply s Home page will appear
44. ccepted correctly 9 6 Message Terminators When you are using a program that sends separate SCPI commands out through a TCP socket the socket drivers may combine all the messages into one long packet Therefore it is necessary to add a terminator character to the end of each SCPI command All SCPI commands must have a terminator character Terminator Character and ASCII hex Commands One or more terminators required from the Controller Line feed Carriage return or Semicolon Ox0A 0x0D OXSB Responses All responses have Line Feed at end from the Genesys LAN Ox0A 34 TDK Lambda 9 7 Using TCP Sockets This is the most popular socket type It features a managed connection message acknowledgements transmission error detection and correction Open TCP socket port 8003 to send SCPI commands Responses to queries are sent back automatically with a line feed terminator appended If the web page LAN controller access is set to Multiple Clients see section 6 6 2 then up to three controllers may open TCP sockets to one power supply at the same time Instrumentation utilities from the Test and Measurement market support TCP sockets For example VISA and IVI allow raw socket or data socket instruments with a resource name such as TCPIP 169 254 33 192 8003 SOCKET 9 8 Using UDP Sockets This is a simpler socket type with reduced network traffic It is a connectionless protocol beca
45. d NO eer E O E E E 54 PPA ESN Ea EA SI occas A E E A E A E A E EE 54 12 3 Connect and Configure the RS 485 Supplies csscscsssssssssscsscesscscosssssesssesseocsssessesssssscesseseesesssssscecsesscousssssacesssescoseeeseacesess 55 12 4 Multi drop Programming Using SCPI COMMANAS ss ssesssesseessesssessesssesseesecsseeseeoseesseoseessesseesseeseesseoneesseoseessesseesseeseeoseoseesseossesss 55 13 SYSTEM ERROR MESSAGES sirnrirnie ei aneiens EEN E EN EEEE ANAA 58 Tg AMPLE PROGRAM Sorea ei n a E ENO 60 MA WED DOWNOAO Sarica ap E EA E A E AN 60 e PRE a EEE S51 a E E jase A A A EE AE A I E A E 60 1 TROUBLES ROOTING iiron inii nni EE O AE ONEEN A EEEE NOE EA 61 15 1 Cannot See the IP Address LAN Status LED Stays Red u cssssssssssssesscessssecsssssssscessesscsssssecsssssecscassesecsssesscsesesecscassesecseseses 61 15 2 IP Address is All Zeroes LAN Status LED Stays Red ssssssscsssssecsssssesscessesscssssssscsssecscsssssecsssssecscsesesscsesescscsesececaesesecseseses 61 15 3 IP Address is Three Zeroes and a Number u ecssssssssssssssssssssscecsssessssssessesssesscsssssssscassecseassesscsesssecseaesesscsssesacsesesecscassesecssseses 61 15 4 Cannot Communicate to the Power SupplY s sssesssesssesssesssesssessseesseeossessseosseosseosseosseosseosseosseosseosseosseosseosseosseosseosseesseesseeoseees 61 15 5 Cannot View Web Pages Over a Peer to Peer NQtWOFK cscsssssssssssssssssssssssssssescscscsesessescsescsssesesesesc
46. e 1st number in the address 2 2 Rotate tohe voltage encoder until the display shows samething such as O 53 is the 1st number in the address 3 Rotate the current encoder to change the 3d number in the address O 60 is the new 3d number 4 To apply the new address momentarily press the FOLD button See the display shows for a few seconds Lan This shows the LAN connection is on hold while acquiring the new address If you da not press FOLD soon enough the display returns to normal and the old address is kept ll If another device already has the address you are trying to set duplicate addresses then after Lan Hold clears the front panel will blink and the address will return to what it was before the change was made When you change the IP address from the front panel the Genesys LAN will switch to STATIC addressing DHCP and Auto IP addressing will be disabled TDK Lambda 5 3 LAN Reset If it is necessary to reset the supply to the factory default LAN settings use the front panel to 1 2 Press and hold the OVP UVL button for 2 seconds The 7 segment displays will show Lan rES Release the OVP UVL button Briefly pressed and release the OVP UVL button again The displays will briefly show rES 0000 and the LAN will be reset to the default settings listed below If the OVP UVL button is not pressed again the LAN settings will not be reset It may
47. e Genesys power supply LAN option will automatically detect if it is connected or disconnected from a network It will also automatically look for a network server and it will get or create an IP address It will also broadcast its IP address and hostname to all other devices on the network 1 Before turning the power supply ON verify it is set to enable LAN See the switch setting in section 3 3 1 2 Turn ON the power supply AC power See the front panel show Lan for about 3 seconds After that the supply will show OFF or the last output settings 3 The LAN cable may be connected before or after the supply is switched on 4 Fora server network wait about 15 seconds See the rear panel LAN Status LED turns green 5 Fora peer to peer network wait about 40 seconds See the rear panel LAN Status LED turns green The computer screen may show aLAN notification bubble This connection has limited or no connectivity When the LAN Status LED turns green the power supply IP address will change from all zeroes to a valid address nN It can be viewed on the front panel see section 5 1 If the LAN Status LED does not turn green see section 15 for troubleshooting steps 4 4 IP Addresses The simplest and most reliable way to open a network connection is with the power supply s IP address This is a group of four numbers separated by periods for example 10 1 15 123 This IP address may be viewed from it s fron
48. e web browser will automatically close Re open it using the new address see section 5 1 If the change causes a duplicate IP the LAN Status LED will turn red In this case do a front panel LAN Reset section 5 3 and try to modify the LAN settings again A d Lan Modify Windows Internet Explorer JAX Lan Modify Windows Internet Explorer Lan Modify Lan Modify TCP IP Mode DHCP Assigned AUTOIP Static IP TCP IP Mode IP address IP address Subnet Mask Subnet Mask Default Gateway DNS Server Hostname Description Genesys Power Supply TCP IP Mode This selects how the power supply gets it s network settings Select either DHCP Assigned AUTO IP If this mode is selected the network server uses DHCP to assign the IP address subnet mask default gateway and DNS server Since the server assigns these they are disabled gray on the web page If the server cannot make the assignment the power supply shall revert to the Auto IP method described in section 4 4 In this mode the user may only change the hostname and description Static IP If this mode is selected the IP address subnet mask and default gateway must be entered in the window fields The settings must be compatible with the 27 TDK Lambda requirements of the network server These settings do not change as the power supply is moved to different LAN connections In this mode there is no hostname connectivity so the hostname and DNS server
49. ent Specifications which standardize instrument driver technology Built upon VISA drivers IVI has interfaces so any programming language can use standard calls to COM and DLL libraries A Local Area Network is usually a small group of computers printers and other devices connected to share information and services With a gateway these devices can also connect to a Wide Area Network WAN LAN Extensions for Instrumentation A standard adopted by many test and measurement companies To be LXI certified an instrument must conform to many requirements including network connectivity web page operation and software drivers See www lxistandard org for details The Media Access Control address is a identifier for the manufacturer and the instrument It is like a serial number and it may be used to configure the LAN connection It has six hexadecimal values Example 00 19 f9 00 3e 26 A message sent to the power supply which reads back a setting or a measurement A query does not change any settings It may be sent using a SCPI command or from the web pages A universal protocol for messages over LAN Libraries for writing socket programs are available for almost all program environments and operating systems including industrial PLCs Two types of sockets are common TCP and UDP These are a lower level protocol upon which VISA is built The Standard Commands for Programmable Instrument is a structure of text based commands
50. g this button again or by operating any knob or button on the power supply front panel 23 TDK Lambda Measurements This section displays the selected power supply s actual output voltage and current and the operating mode constant voltage or constant current or off Also faults are shown in the voltage display Settings This section displays the selected power supply s voltage and current limit settings as if they were set on the front panel encoders Modify Settings This button is disabled gray text until you login see section 6 4 After logging in click this button to open the window shown below 6 5 2 DC Power Output Modify Settings Page After you have logged in and clicked the DC Power Modify Settings button a pop up window shows gt Modify Output Settings Windows Internet Explorer AE Output VoltageLimit Current Limit cael 12 00 10 000 O of Volts Amps Modify Output Settings In this window you may enter new values for the voltage and current limits and turn the output on and off The new settings will not take place until the Apply button is clicked and the pop up window closes 6 5 3 DC Power Protection Page Under the DC Power tab a Protection button is available at the top of the panel When opened the window that allows you to view and set four protections The Apply buttons are not enabled until you log in Note a control slider on the rig
51. hen the contents of the register are read or when a clear status command is sent 11 8 4 Clear Status This command resets the error status and message registers in the LAN board No power supply settings are changed The CLS command will Erase any response message in the output queue Erase any errors in the SYSTEM ERROR queue Reset all event registers to zeroes Will not change any Enable or Condition register bits Syntax CLS Query This command has no query form 47 THE IEEE 488 2 ERROR AND STATUS REGISTERS Questionable Condition Condition Enable Event ISUM for Multidrop E a ISU Peg ET gg os go Over Temperature 2 ore a a N r Fold Back Prot A ELD Fo EL Im Over Voltage Prot OVP 1 OVP ee BA a oe pane Cl po en S S Output Enable Ea E o Internal Input Overflow z INPO eere INPO Internal Overflow 2 INToL gt 4 sn ToL Internal Timeout ike iud tF jm Internal Comm Error coj t z4 com H H E Plang ee MSB 15 0 EN EA STAT QUES COND STAT QUES EVEN STAT QUES ENAB nn STAT QUES ENAB Standard Event Status Event Enable Operation Complete LB wie 1 E ee Not Used CE as Query Error OYE 4 Device Dependant Error 2 DDE tc Execution Error EXE Command Error z CME User Request UE a A ae Power On MSB T ISON meee ESE nn BoR ESE Operational Condition Condition Enable Event LSB 0 Constant Voltage oe Constant Current cc Htec Hm No Fault 3 NEL
52. ht side of the panel is needed to view all four settings which are A Over Voltage Protection see section 11 5 1 B Under Voltage Limit see section 11 5 2 C Foldback Protection ON or OFF see section 11 5 4 D Auto Start or Safe Start see section 11 4 3 In a multi drop chain these settings affect only the supply selected in the RS 485 address listbox 6 5 4 DC Power System Page Under the DC Power tab a System button is available at the top of the panel When it is clicked the window that allows you to operate four functions A Reset One Instrument see section 11 7 2 this resets only the supply selected in the RS 485 address listbox B Reset All Instruments see section 12 4 7 this resets any supplies connected to the multi drop bus C Save see section 11 7 3 this saves the settings for only the supply selected in the RS 485 listbox D Recall see section 11 7 4 this recalls the settings for only the supply selected in the RS 485 listbox 24 TDK Lambda 6 5 5 DC Power Utility Page This page is used to send any SCPI command and see the response It is a learning tool for SCPI operation and it allows commands which are otherwise not on the web pages The SCPI commands are described in section 11 Select Multi drop C RS 485 Address DC Power Send Custom SCPI Commands VOLT PROT LEV 6 0 After logging in see section 6 4
53. ic characters Example 25B1234 Field 4 Revisions lt Main firmware gt lt LAN firmware gt Example 2U5K IP 4 5 1 0 MARO9 CVP18P1 Example Response LAMBDA GEN20 250 LAN S N 10M5470B 2U5K 5 1 1 LAN 2 1 11 7 2 Reset the Power Supply This command will reset all settings in the power supply to a known safe state This includes setting the programming limits to zero output off and auto restart off Other protections are disabled Sending RST is the same as sending all nine of the following commands VOLT 0 sCURR 0 CLS OUTP STAT 0 SYST SET REM OUTP PON OFF CURR PROT STAT OFF sVOLT LIM LOW 0 VOLT PROT LEV MAX Syntax RST 11 7 3 Save All Settings This saves the present power supply settings This is used along with the RCL 0 command in section 11 7 4 which allows you to bring the power supply back to some setup configuration with only one command When the supply is powered down the SAV 0 settings are over written by the powerdown settings Syntax SAV 0 44 TDK Lambda 11 7 4 Recall All Settings This recalls the last saved power supply settings These may be from the last SAV 0 command in section 11 7 3 or if no SAV 0 has been sent the last settings restored at power up The recall command will change the following settings with only one command where lt last gt are the last settings from SAV 0 or from power up sVOLT lt last gt sCURR lt last gt OUTP STAT lt last gt SYST SET lt last gt OUTP
54. iptors for the Genesys power supply with LAN are Format TCPIP board host address LAN device name INSTR board is the LAN card number zero is optional LAN device name is by default inst0 INSTR is optional Examples TCPIP 10 225 26 60 inst0 INSTR TCPIP 3169 254 57 10 INSTR TCPIP1 GEN60 25 470 INSTR See the sample programs section 14 for examples 7 4 Communicating Using VISA The VISA Write function will send SCPI commands to the power supply the VISA read will read the response returned from a SCPI query For programming examples and support refer to the VISA vendor s web site 31 TDK Lambda 8 PROGRAMMING USING IVI DRIVERS 8 1 IVI Description In the test and measurement industry the Interchangeable Virtual Instrument is a set of specifications which standardize instrument driver technology IVI is built upon the VISA hardware drivers IVI has interfaces so almost any programming language can use standard calls to NET COM and DLL libraries The IVI instrument can be configured with a management utility such as National Instruments Measurement amp Automation Explorer MAX program or the Agilent I O Libraries IVI settings may also be made programmatically through optional parameters These allow several benefits to measurement system designers IVI standardizes common functions to reduce the time needed to learn a new IVI instrument You do not need to learn the Genesys p
55. is will be it s output current The current limit rounded to four digits may be viewed on the supply front panel by pressing and releasing the PREView button Syntax SOURce CURRent LEVel IMMediate AMPLitude lt nn nn gt Parameter lt nn nn gt is amps from zero to 5 more than the current rating Example CURR 172 75 Query CURR will return 172 75 in example this may be different than the actual output current Errors SYSTEM ERROR may return errors including 222 Data out of range 38 TDK Lambda 11 2 3 Set the Output ON or OFF This command turns the power supply output on or off The output on command may not work as expected The latching power supply faults including AC fault over temperature J1 Enable and J1 Shut Off will prevent turning the output on until the fault clears For non latching faults including over voltage and current fold back turning the output on will clear the fault Syntax OUTPut STATe lt 0 1 OFF ON gt Parameter 0 or OFF will set the power supply output to OFF 1 or ON will set the power supply output to ON if it is able to Example OUTP STAT 1 Or OUTP STAT ON Query OUTP STAT will return ON in the example otherwise OFF Errors SYSTEM ERROR may return errors including 307 On during fault 11 3 Measuring the Output 11 3 1 Measure the Output Voltage This query returns the measured voltage at the output terminals or remote sense point Syntax MEAS
56. k lambda com ITALY TDK Lambda Italy Sales Office Via dei Lavoratori 128 130 IT20092 Cinisello Balsamo Milano Italy E mail info italia it tdk lambda com www it tdk lambda com ISRAEL Lambda Ltd Tel 39 02 6129 3863 Fax 39 02 6129 0900 K iH a INQ JAPAN TDK Lambda Corporation International Sales Divison Nittetsu Bldg 6F 1 13 1 Nihonbashi Chuo ku Tokyo 103 0027 Japan Tel 81 3 5201 7175 Fax 81 3 5201 7287 www tdk lambda com CHINA Shanghai Branch of Wuxi TDK Lambda Electronic Co Ltd 28F Xingyuan Technology Building No 418 Guiping Road Shanghai China 200233 Tel 86 21 6485 0777 Fax 86 21 6485 0666 www cn tdk lambda com Beijing Branch of Wuxi TDK Lambda Electronic Co Ltd Room 12B11 12B12 Unit 7 DACHENG SQUARE No 28 Xuanwumenxi Street Xuanwu District Beijing 100053 CHINA Tel 86 10 6310 4872 Fax 86 10 6310 4874 www cn tdk lambda com Shenzhen Branch of Wuxi TDK Lambda Electronics Co Ltd Room 4302 Excellence Times Square Building 4068 Yi Tian Road Futian District Shenzhen China 518048 Tel 86 755 83588261 Fax 86 755 83588260 www cn tdk lambda com TDK Lambda Corporation Seoul Office 8F Songnam Bldg 1358 6 Seocho Dong Seocho Gu Seoul 137 862 KOREA Tel 82 2 3473 7051 Fax 82 2 3472 9137 www tdk lambda co kr SINGAPORE TDK Lambda Singapore Pte Ltd Blk 1008 Toa Payoh North 07 01 03 Singapore 318996 Tel 65 6251 7211 Fax 65 6250 9
57. l Mode The supply may be operated in the local or front panel mode even when a computer is using the LAN connection If the supply is in remote mode the front panel REM LOC LED is ON The supply may be returned to local by pressing and releasing the REM LOC button If the REM LOC button will not go into local mode then If the LAN is being used to change settings the supply will automatically go to remote with every command Stop the LAN program and then press REM LOC button TheLAN computer may have sent a Local Lockout command Use the LAN to send SYST SET LOC see section 11 4 2 or turn the supply AC off and on and then press the REM LOC button 3 2 2 Select RS 232 amp RS 485 Serial Remote Mode The serial RS 232 amp RS 485 remote control may be selected even if the LAN option is installed The serial remote is described in the Technical Manual for the Genesys Power Supply The LAN has similar capabilities as the serial remote but the LAN SCPI programming language is not compatible with the serial language To select the RS 232 amp RS 485 mode A Switch the supply AC power off B Set the LAN card switch pin1 to DOWN see Figure 3 C For RS 232 set rear panel SW1 pin 6 to DOWN For RS 485 set SW1 pin 6 to UP D Switch the supply AC power on The front panel will not show Lan at startup TDK Lambda 3 2 3 Select LAN Remote Mode Selecting the LAN mode will allow pr
58. l select a random address in the range of 169 254 xxx xxx Also called Link Local addressing An connection that automatically detects either a patch straight through or a cross over LAN cable Either type of LAN cable is acceptable Auto Negotiate The power supply will automatically choose the fastest speed that the network can support Command DHCP Hostname Ethernet IP Address IVI LAN LXI MAC Address Query Socket SCPI VISA The Genesys power supply can operate at 10 megabits per second Mbps or 100 Mbps A message sent to the power supply which changes one or more of it s settings It may be sent using a SCPI command or from the web pages No response message is returned but an error message may be created The Dynamic Host Configuration Protocol is a method where the IP address and other settings are loaded from the network server to the power supply The IP address and other settings may change each time the network connection is created A unique name for a device on a network A descriptive name may be created by the operator For the default hostname see section 4 5 The most common configuration for a LAN It includes connection detection and message collision protection The Internet Protocol address is a numeric identifier that says where messages are sent to or received from It has four numbers each zero to 255 Example 10 190 34 17 The Interchangeable Virtual Instrum
59. mmand is first sent or a value other than 255 see section 11 8 15 for bit descriptions If a fault is reported no further faults are reported by SYSTEM ERROR unless the event registers are cleared by sending STAT QUES or CLS See Section 13 for a complete list of SYSTEM ERROR messages Syntax SYSTem ERRor Example SYST ERR Response lt error number gt lt error description gt lt serial address gt lt error number is a value from 350 to 399 Negative values are errors The command was not understood or it could never be executed by the power supply Positive values are warnings The command was understood but it could not be executed at this time or a fault has shut down the output lt error description gt is brief description of the error lt serial address gt is the address of the reporting power supply It is the supply s RS 485 address set using the front panel see section 12 2 2 The address will be 99 if multiple RS 485 supplies report the same fault condition Examples 0 No error this response has no serial address 222 Data out of range address 06 321 AC fault shutdown address 02 11 8 2 Enable System Error This command clears any error messages from the SYSTEM ERROR queue No other status registers are affected For the LAN option the SYSTEM ERROR messages are automatically enabled at powerup With the Genesys IEEE option SYST ERR ENAB is required to enable
60. not listed below sVOLT n nn VOLT MEAS VOLT OUTP STAT 1 OUTP STAT VOLT LIM LOW n nn VOLT LIM LOW SOUR MOD System Queries 30 mSec Examples SYST ERR INST SEL ESR Status Register Queries 60 mSec Examples include STAT QUES COND STAT OPER COND Instrument Select for Multi drop 230 mSec Example INST SEL nn Identity Query 260 mSec Example T DN TDK Lambda 3 SELECT THE CONTROL METHOD 3 1 A Variety of Control Methods The Genesys power supply with LAN is very flexible In addition to the LAN there are other ways the supply can be used See the Technical Manual for Genesys Power Supply for more details on the local front panel serial RS 232 485 or analog J1 control 3 2 LAN Local or Serial The power supply with the LAN option installed may be operated through four interfaces This section describes how to enable each MODE MODE DESCRIPTION 1 LAN Control using an Ethernet connection LAN will disable the J3 IN serial port 2 Local Control using the front panel encoders and LAN can be used to measure and read buttons while in local mode 3 Serial Control using RS 232 and RS 485 through the Serial will disable the LAN port J3 IN and J3 OUT connectors 4 Analog Control using an analog signals to the 25 pin LAN local or serial may still be used to J1 connector measure and set protections 3 2 1 Select Local Front Pane
61. ocal and remote modes Syntax SYSTem SET lt 0 1 2 LOC REM LLO gt Parameter Mode Numeric Text Mode Description Setting Setting Local 0 LOC Operate supply from front panel Measurements may be made remotely Remote 1 REM Operate supply from LAN port Measurements may be made on front panel Local Lockout 2 LLO Same as Remote but front panel Go to Local button is disabled Example SYST SET 2 or SYST SET LLO Query SYST SET will return LLO in example 11 4 3 Set Auto Restart or Safe Start Modes This command sets the way the power supply will power up when the AC is switched on It also affects how the supply recovers when latching faults are cleared Latching faults include AC fault over temperature Ji Enable and J1 Shut Off The autorestart mode changes the response of the power supply when for example the AC power recovers from a momentary drop out or the J1 Enable signal is restored to normal The start mode may be viewed on the supply front panel by pressing and holding the OUT button while in local mode When the AC is first switched on the power supply output may be forced off even with the auto start enabled by pressing and holding the OUT button during the power up sequence This command is in addition to SCPI requirements Syntax OUTPut PON lt 0 1 OFF ON gt Parameter Mode Numeric Text Mode Description Setting Setting Safe Start 0 OFF Supply will power up with the output
62. ocket programs you may not use a semi colon terminator Syntax DIAGnostic COMMunicate PASSthrough lt string gt Parameter lt string gt is any RS 232 485 command or query no quotes are used to enclose the string 43 TDK Lambda Example 1 DIAG COMM PASS PV 25 will program the voltage limit to 25 volts Response 1 OK will be returned by the above command or an error such as E01 may be returned Example 2 DIAG COMM PASS MV will measure the output voltage Response 2 24 983 is a sample response to the above query 11 7 Common Commands Common commands were first defined in the IEEE 488 2 standard which is the predecessor of the SCPI standard They are not specific to power supplies They are common commands which are useful for any remote communication Many common commands refer to bit mapped registers in which setting bits to 1 or 0 indicates an operating mode or fault condition These are described in the Error and Status section 11 8 below 11 7 1 Identity Query This is a request for the power supply to identify itself It is used by the remote computer to verify the correct instrument is being communicated to and to determine the model ratings of the power supply Syntax IDN Response Four fields separated by commas Field 1 Manufacturer name Example LAMBDA Field 2 Model name GEN lt Volt rating gt lt Curr rating gt Option Example GEN150 22 LAN Field 3 Serial number typically 7 alpha numer
63. off but it keeps all other last power down settings If a latching fault clears output will stay off but it keeps all other settings made before the fault occurred Auto Restart 1 ON Supply will power up with the output on at the last power down settings If a latching fault clears output will automatically turn back on to the last settings before the fault occurred Example OUTP PON 1 or OUTP PON ON Query OUTP PON will return ON in the example 40 TDK Lambda 11 5 Output Protection 11 5 1 Set Over Voltage Protection This command sets the over voltage protection level If the power supply output exceeds this voltage at it s output or at a remote sense point then the output will immediately turn off the supply front panel will show OUP and the Questionable Condition register bit 4 will be set high The voltage limit setting made by the front panel encoder or the VOLT command in section 11 2 1 is restricted to 95 of the OVP setting Likewise the OVP setting cannot be made lower than 105 of the voltage limit setting The over voltage protection may not be disabled The OVP setting may be viewed on the supply front panel by pressing and releasing the OVP UVL button This fault is cleared by turning the power supply output on again Syntax SOURce VOLTage PROTection LEVel lt nn nn MAX gt Parameter nn nn will set the OVP to a value in volts MAX will set the OVP to the maximum value t
64. ogramming over the Ethernet cable Any settings and measurements may be done from a remote computer using the power supply s built in web pages or using SCPI programming To select the LAN mode A Switch the supply AC power off B Set the LAN card switch pin1 to UP see Figure 3 C Switch the supply AC power on The front panel will show Lan at startup 3 3 LAN Option Rear Panel View The power supply rear panel with the LAN option installed is shown below LAN Enable Link and Activity Collision Switch LED LED Amber Showing LAN Enabled mj LAN t LA 232 4854 Le Ji ma DEG LAN Status RJ 45 LED Socket Figure 3 Rear Panel LAN Features 3 3 1 LAN Enable Switch This two pole DIP switch allows you to select the LAN or the RS 232 485 mode The switch on the left is the only one used The supply s AC power must be OFF to change this switch The change is only detected during the supply s power up sequence SWITCH UP select the LAN mode The power supply shows Lan at power up The rear panel J3 IN port for RS 232 485 does not operate The J3 OUT port may be used to start a multi drop chain of supplies see section 12 When using the LAN always set the supply to RS 232 mode by setting rear panel SW6 bit 6 to DOWN See section 12 2 for details SWITCH DOWN select the RS 232 485 mode The power supply does not show Lan
65. ommand will select one power supply in a multi drop chain Subsequent commands and queries will operate only on that supply until a new one is selected At power up the LAN supply is automatically selected Syntax INSTrument SELect lt nn gt Parameter lt nn gt is the supply s RS 485 address It is a number from 0 to 30 see sections 12 2 1 and 12 2 2 for set up instructions Example INST SEL 6 Query INST SEL will return 06 in the example Errors SYSTEM ERROR May return errors including 241 Hardware missing address nn if nn is an invalid address GLOBAL COMMANDS The following global commands affect all power supplies on a multi drop chain See section 12 4 2 for requirements There is no query version of these commands 12 4 4 Global Set the Voltage Limit This is the global version of the VOLT command in section 11 2 1 Syntax GLOBal VOLTage LEVel IMMediate AMPLitude lt nn nn gt 56 TDK Lambda Parameter lt nn nn gt is volts the setting applied to all power supplies Example GLOB VOLT 9 45 12 4 5 Global Set the Current Limit This is the global version of the CURR command in section 11 2 2 Syntax GLOBal CURRent LEVel IMMediate AMPLitude lt nn nn gt Parameter lt nn nn gt is amps the setting applied to all power supplies Example GLOB CURR 350 12 4 6 Global Set the Output ON or OFF This is the global version of the OUTP STAT command in section 11 2 3 Syntax GLOBal OUTPut STATe lt 0
66. one power supply may be selected at a time One controller may change the selected address and the other may not be aware that a new address is active NOTE The RS 485 power supplies must be Multi drop enabled See section 12 3 1 below Hi ee Optional RS 485 Hub RS 485 RS 485 terminators or Link Cable Link Cable E Cables J3 J3 IN J3 out J3 IN J3 Fig rive EET Oian MD Donen Up to 30 supplies MD BTN mm in l in one chain jt RS 485 Addresses t must be different IP it RS 485 Addresses Server must different may be i nE buar OUT J3 IN Nh l J3 al J3 IN a J3 LAN OnE MD Nese Up to 30 supplies MD BETTE in one chain Figure 8 Configuring a Multi drop System of Supplies 12 2 Configure the LAN Supply The LAN power supply at the head of the multi drop chain is called the Master supply 12 2 1 To Set Up the Master Power Supply A Connect the LAN to a computer as described in section 4 B Enable the LAN option with it s rear panel switch See Figure 3 C Set the supply into RS 232 mode by setting rear panel SW1 bit 6 to DOWN D Connect a RS 485 Link cable from the rear J3 OUT jack to the next supply s J3 IN E Switch AC power on the supply F Set the supply s RS 485 address as described below 54 TDK Lambda 12 2 2 To Set the RS 485 Address In addition to the supply s IP address the multi drop requires setting an RS 485 address It is viewed on the front panel of the power sup
67. ower Supply for those specifications 2 2 LAN Specifications ELECTRICAL Ethernet Meets IEEE 802 3u specifications Auto MDIX Accepts patch or cross over cable connection Auto Negotiate Selects fastest of 10Base T or 100Base T networks 10 or 100 Megabits per second NETWORK CONFIGURATION MAC Address TDK Lambda assigned 00 19 9 xx xx xx IP Address View or set with restrictions from front panel DHCP Get address from network server Leasing services Auto IP Create own IP address 169 254 xx xx Static IP Any IP fixed by operator Hostname NetBIOS ARP and rARP protocols Operator settable name Duplicate IP Detection Reject duplicate setting or disconnect from network Subnet Mask Mask set by DHCP or static Default Gateway Address set by DHCP or static DNS Server Address set by DHCP LAN Reset Reset configuration from front panel or SCPI command LAN PROTOCOLS TCP LAN packets follow Transmission Control Protocol IPv4 Internet Protocol version 4 Instrument Protocols VXI 11 Supports Core channel not Abort or Interrupt channels VISA VXI 11 compliant uses RPC and Portmapper SCPI cmds TCP Sockets Send SCPI commands to port 8003 UDP Sockets Send SCPI commands to port 8005 VXI 11 Discovery Find connected instruments SNMP Ping Server Verify LAN connection to instrument HTTP Web page serverwith Java scripts and applets COMMANDS SCPI SCPI 1999 compliant command measure and status IEEE 488 2 Condition and event register tree Serial Pass Through
68. ower supply s SCPI commands Instrument simulation allows developers to run code without an instrument Automatically perform a status check to verify each power supply setting is acceptable IVI drivers feature a variety of wrappers to allow simple interfacing to a variety of Windows programming environments IVI drivers provide for interchangeability Interchangeability allows easy swapping of instruments without changing the control program 8 2 IVI Support There are a variety of websites that give additional information on IVI including The IVI Foundation home page has good Getting Started tutorials for a variety of programming languages http www ivifoundation org Pacific Mindworks is a leading developer of IVI technology It offers several white papers on IVI http www pacificmindworks com The LambdaGenP3S IVI drivers and some Getting Started tutorials are available from the TDK Lambda website http www us tdk lambda com hp register htm 32 TDK Lambda 9 PROGRAMMING USING SOCKETS 9 1 Socket Description The VISA and IVI drivers for the Genesys power supply with LAN are popular in the Test and Measurement world However some customers cannot use VISA because of installation or licensing issues or because the controller i e industrial PLC does not have support for VISA If you cannot use VISA drivers then the Genesys with LAN 2 0 and Later offers socket connections These
69. ply by setting it to local mode see section 3 2 1 and pressing and holding the REM LOC button The address may then be changed by turning the voltage encoder The default RS 485 address is 6 It may be set to any value from 0 to 30 The RS 485 address is not related to the IP address However it is required that no other power supply on the multi drop chain have the same RS 485 address 12 3 Connect and Configure the RS 485 Supplies The RS 485 linked power supplies are called the Slave supplies They may be individually commanded and queried using the LAN port on the Master supply The RS 485 power supplies must be Multi drop enabled 12 3 1 To Verify the Multi drop is Enabled A The power supply product label may have MD in the model description B Or try running the multi drop chain Open the LAN web page On the DC Power page click the Refresh List control see section 6 5 1 The addresses of all the multi drop enabled RS 485 supplies will be shown in the list C Or use the RS 232 485 port with a communication program such as HyperTerminal to send the MDAV query if the response is 1 the multi drop is enabled in the supply Refer to the Technical Manual for details on using the RS 232 485 port 12 3 2 To Set Up an RS 485 Chain A If the supply has the LAN option disable the option by sliding the LAN enable switch to DOWN See section 3 3 1 and Figure 3 Set the supply into RS 485 mode by setting
70. ply output on again see the OUTP STAT ON command section 11 2 3 Syntax SOURce CURRent PROTection TRIPped Example CURR PROT TRIP Responses 0 when no FB fault is active 1 when supply is shut down because of a FB fault 11 6 LAN Specific Commands 11 6 1 Blinking the Identify LED When communicating to a stack of Genesys power supplies it may be difficult to know which supply is selected for communicating The LAN computer may send a command to cause the selected supply s front panel displays to blink on and off Also the LAN LED on the rear panel will blink In a multi drop chain of supplies see section 12 only the LAN supply will blink If blinking is turned on then it may be turned off by sending the OFF command or by changing any front panel control Syntax SYSTem COMMunicate LAN IDLED lt 0 1 OFF ON gt Example SYST COMM LAN IDLED ON Query There is no query to read if flashing is turned on 42 TDK Lambda 11 6 2 Read the Hostname The hostname see section 4 5 may be read with this query Syntax SYSTem COMMunicate LAN HOST Example SYST COMM LAN HOST Response The hostname string up to 15 characters long Example GEN7p5 1000 123 is a typical default hostname 11 6 3 Read the IP Address The IP address see section 4 4 may be read with this query Syntax SYSTem COMMunicate LAN IP Example SYST COMM LAN IP Response The IP address string up to 15 characters long Example 169 254 9 35 is
71. rce code and executable is given 14 2 Customer Support For further assistance regarding the LAN interface please contact the factory or a local service center in your area To get a list of service centers in your country go to http www us tdk lambda com HP service htm 60 TDK Lambda 15 TROUBLESHOOTING 15 1 Cannot See the IP Address LAN Status LED Stays Red If you press and hold the front panel FOLD button for 3 seconds the voltage display should show IP 1 see section 5 1 If IP 1 does not show then the LAN enable switch has not been set To fix this A Switch the power supply AC OFF B Verify the LAN Enable switch is UP see section 3 3 1 You may want to slide it down and up a few times to clean the switch C Switch the power supply AC ON again See the voltage display shows LAn for a few seconds during power up 15 2 IP Address is All Zeroes LAN Status LED Stays Red When viewing the IP address on the front panel hold the FOLD button see section 5 1 and you see the IP address is all zeroes then the power supply is not connecting to the network A Verify the LAN cable is connected to an active network Look at the rear panel Link LED part of the RJ 45 connector see section 3 3 2 and verify it is green and possibly blinking a little If the LED is not lit then the LAN cable is not connected properly B Waitlonger and try to read the IP address again In the Auto IP mode
72. resses When the power supply is running with the LAN enabled the IP and MAC addresses may be viewed on the front panel by following these steps 1 Press and hold the FOLD button for three seconds The 7 segment displays will show something such as By turning the voltage encoder knob the complete IP and MAC addresses may be seen Note all four numbers of the IP address may be changed through the web pages or from the front panel see next section The MAC address cannot be changed KH j m In this example Rotate voltage knob P H H Alls Ww N Q IIN H I WW TINO TINO IIe w TIN To Io CO TIO In o UI the IP address is 10 225 26 38 H T e DP e QA IIQ g the MAC address is 00 19 F9 27 D3 B0 AC is short for MAC P Y e 2 2 PLP He l Orv f LOLE TPR 7d 2 If the voltage knob is not changed for five seconds the supply will revert to the normal voltage and current displays If this happens press and hold the FOLD button agai TDK Lambda 5 2 Change the IP Address The LAN with revision after 2 0 allows you change all four numbers octets of the IP address from the front panel The IP address has four numbers ex 192 168 53 44 Each number may be set to any value from 1 to 254 1 Press and hold the FOLD button for three seconds The 7 segment displays will show something such as The Power supply must be set to Local mode to allow changing the IP address 192 is th
73. s power supply has valid IP connection Find the supply by remotely blinking front and rear LEDs Indicates if LAN has control of supply output Front panel button Change entire IP address on front panel Change RS 485 address on front panel Disable LAN to enable RS 232 485 or Multi drop slave Can set password to prevent unauthorized or accidental changes to LAN or power supply output settings Set to prevent multiple programs from taking control Single client will block attacks through UDP sockets Stop intruders from finding the power supply Stop intruders from finding the power supply Certified for LXI rev 1 1 class C instrument Conformances that are granted to basic power supply also apply to power TDK Lambda 2 3 LAN Command Speed The following communication speeds are typical values only In addition to the variability in the Genesys LAN interface there are timing variations within the controller and the network routing The following speed specifications are subject to change without notice VISA Drivers Speed Commands and queries sent using VISA drivers generally take 10 mSec longer than the same message sent using TCP sockets in table below UDP Sockets Speed Commands and queries sent using UDP sockets generally are 5 mSec faster than the same message sent using TCP sockets in table below TCP Sockets Speed Typical Command or query speeds Most Commands and Queries 85 mSec This includes all commands
74. scsesseseseseaessseesesescaeeces 62 15 6 Cannot Open Web using Laptop or Dual LAN Card COMPUte ro sesesesessssssesssesessescscsesssessssescseseseseesesescsescsessesesesenees 62 15 7 Web Page Fields Show as Little Blocks oanscsucidsaciinsessancrsnstnioveacseessvnissd snyssswenens indasnarituessesduadoxtnsantsesdaljess eatoubsoeisedeeasustabsiaderasansannaaid 62 15 8 Web Page Refresh List Does Not Find Slave Supplies es sesesssesssesoseessessseesseesseessseoseeosseosseosseonseosseosseosseosseesseesseesseesseesseess 63 15 9 Cannot Connect Using HOStNaMe ssesseseesessesseseesessesressoscereseesroscosesrescosessesroscosesresresroseoresrosceresresrereosesresresessesresrosceresresreressess 63 15 10 Web Page Modify Settings Does Not WofrK sss sssseessseesssessssessseessseessseesssesssseosserosseeosseessseossseosseronserosseesssessssrosserosserosserssss 64 T OLOS ARY earr EE A E AE E A E N 65 Table of Figures Figure 1 Front Panel LAN FeatureS se sssessesssesseessesseessesseesseossesseoseesseesecoseeseesseosseoseossessceseeoseeseeoseosseoseossesseeseeoseesteoseossesseesseoseeseeoseesseose 6 Figure 2 Rear Panel LAN Features cscscsssssssssssscscsssssssssscscsesssessssssesessssssssssesesesssessssesesesesssessesesesessseseensseseseacaesseseseseasaesesseseseseaeaeeaeaees 6 Figure 3 Rear Panel LAN FeatureS seesssessesssesseessesseessesseesseossesseoseesseeseesseesseoseosseoseossesseeseessceseesstosseoseos
75. sesseeseeoseesseoseossesseesseoseeseeoserss eos 12 Figure 4 Server Network Connection Diagram u ccsssscsssssssssssscscssscssssssessesssessssssesesessssssssesesesssessssesesessscsesssseseseseseassseseseseasaeeneas 14 Figure 5 Peer to Peer Connection Diagram seesessesseseesessesseseosesseseesesseosessoseosesseseescosesseseoseoseosescosesseseosrsseoseseoseosesseseescesesseseosesseores 14 EOS WeEDAOME Pag sessionen E 21 Figure 7 Error and Status Registers asss sidii a AE aE E E ASEA ISENTAS 48 Figure 8 Configuring a Multi drop System of Supplies s ssssssssessssesssseesseesssesosseesseeesseeesseeosseessseesseeesseeesseeossessssrosserosserossersssesss 54 TDK Lambda 1 GENERAL INFORMATION 1 1 Introduction The Local Area Network LAN option for the Genesys series power supply allows the user to remotely program measure and check status of the power supply It uses an Ethernet connection like those used to connect computers to each other and to the Internet A computer s web page browser may be used to operate the power supply through a built in web page server For applications including factory and test automation communication may be done using several standard network protocols and instrument commands Refer to the Genesys Technical Manual for information on installing the power supply safety requirements specifications connecting the power in and out operating the front panel using the serial RS 232 485 progr
76. ster This is a settings and modes event register which means bits are set to 1 when a condition occurs and they are not cleared until the register value is read or the CLS command is sent For the condition to be latched as an event the event bit must be enabled as described in section 11 8 12 above The bit assignments are the same as the Operational Condition Condition Register described in section 11 8 11 above Syntax STATus OPERation EVENt Example STAT OPER Response lt nnn gt a number from 0 to 255 Example 2 the supply went into constant current mode 11 8 14 Read the Questionable Condition Condition Register This register reports fault conditions which will cause the power supply output to turn off The faults include User settable faults enable shut down over voltage fold back output off Environmental faults over temperature AC fail Instrument summary fault bit for RS 485 multi drop chain see section 12 4 10 Internal firmware faults four faults q nN This is a conditional register The bits are set to 1 when the fault occurs and cleared when the fault is cleared The values are read only See the Genesys Technical Manual for more details on faults 51 TDK Lambda These are the bit assignments of the Questionable Condition Condition Register ISUM In single LAN supply bit is always 0 In Multi drop system is Instrument Summary bit AC AC Fail fault OTP
77. sters which describe exactly what fault conditions occur in the power supply It also adds status registers that report operating modes during normal operation e SYSTEM ERROR Queue This is a message based error and status reporting system When registers are used the operator must use a look up table to find the meaning of each register bit position The SYSTEM ERROR is a message where the status and error conditions are expressed in readable text This is the preferred method to verify commands are accepted 11 8 1 Read System Error This is query to read error messages from the power supply It is recommended that after any command is sent over the LAN the SYSTEM ERROR should be read to verify the command is accepted The SYSTEM ERROR queue can also be set to report faults which have shut down the supply s output The SYSTEM ERROR is a queue or stack that holds the last ten messages The first error message entered is the first one read It is a good idea to read the SYSTEM ERROR 45 TDK Lambda queue regularly When a faulty command is sent and the SYSTEM ERROR is read the error message could relate to an earlier command The SYSTEM ERROR queue may be cleared by Sending the cLS command this also clears other registers Sending the SYSTEM ERROR ENABLE command Reading the errors until the response is 0 No error Power supply shut down faults willbe reported by the SYSTEM ERROR queue if the STAT QUES ENAB 255 co
78. t click on on the network connection being used for the Genesys LAN Select Properties See window open C Verify NetBIOS naming service is checked This connection uses the following items O QoS Packet eS oh i AMY Link NetBIOS O Nw Link IPH SPS NetBlOS Compatible Transport Prot W Network Monitor Driver be Ifthe power supply has a static address or the computer is not running NetBIOS then hostname addressing may be used if you edit the hosts file in the network server In Windows XP see the text file c WINDOWS system32 drivers etc hosts 63 TDK Lambda 15 10 Web Page Modify Settings Does Not Work When using Internet Explorer 8 to view the web pages the Modify Settings pop up window could show empty boxes for the voltage and current settings If values are typed into these boxes and Apply is clicked then errors are returned Modify Output Settings Windows Internet Explorer Current Limit Off Modify Output Settings Possible solutions 1 In Internet Explorer 8 click the Compatibility View button 2 Verify the Internet Explorer 8 security patch KB978207 is installed Do a web search on KB978207 to find the Microsoft download link 64 TDK Lambda 16 GLOSSARY Auto IP Auto MDIX This is when the power supply configures it s own settings because they cannot be obtained using a network server DHCP With auto IP the power supply wil
79. t panel see section 5 1 There are three modes which the power supply can get an IP address as show in this table IP Address DHCP Auto IP Static IP Mode Select DHCP is default after LAN Default after LAN Reset May be set in the LAN Reset if no DHCP server is used Modify web page see 6 6 2 or by setting the IP 4 address on the front panel see 5 2 Assignment Assigned by Assigned by the network Assigned by the power Assigned in the LAN the server supply Modify web page see 6 6 2 or by setting the IP 4 address on the front panel see 5 2 Range Any address 169 254 xxx xxx Any address Lifetime Address may change as Fixed for the power Always fixed for the the DHCP server assigns supply except if an power supply addresses dynamicallyto address collision is many instruments detected Duplicate The DHCP server should Finds another available Disconnect from the Addresses prevent duplicate IP auto IP address network and the LAN addresses Status LED stays red TDK Lambda 4 5 Hostnames The hostname is an address in the form of text instead of numbers for example GEN30 25 125 This address mode is less common than the IP address because the hostname cannot be viewed from it s front panel and because a naming service such as NetBIOS must be running in the LAN computer Acustom hostname can be created through the web pages see section 6 6 2
80. ure VOLTage Example MEAS VOLT may return 02 006 Response Volts as a 5 digit number which is one decimal place more than the power supply s front panel voltmeter 11 3 2 Measure the Output Current This query returns the measured current at the output terminals Syntax MEASure CURRent Example MEAS CURR may return 009 48 Response Amps as a 5 digit number which is one decimal place more than the power supply s front panel ammeter 11 4 Operating Modes 11 4 1 Read CV or CC Modes The power supply may operate in the constant voltage or constant current mode The mode is selected automatically depending on the voltage limit current limit and load settings The mode is not defined when the supply s output is off The CV or CC mode is shown on the supply front panel LEDs above the encoders Syntax SOURce MODe Example SOUR MOD Responses Cv when in constant voltage mode cc when in constant current mode OFF when the output is off 39 TDK Lambda 11 4 2 Setting Local or Remote Modes This command changes the power supply operation to local remote or local lockout The parameter may be a number or text as described below While the power supply is in local mode the LAN communication may be used to measure the power supply outputs and statuses However as soon as one LAN command is used to change the supply output the supply will automatically go into remote mode See section 3 2 for further discussion of the l
81. us LED is green and the front panel shows a valid IP address but you still cannot open a web page VISA or socket connection then try pinging the power supply The ping utility verifies the computer can send a message and get a response from the power supply over the network On a Windows XP computer open a command line window by A Click the Start button Select Run B A Run window opens Type cmd lt Enter gt See the command window open 61 TDK Lambda C Type ping lt IP address gt IP from the supply front panel see section 5 1 Verify the ping packets had successful responses If the ping does not get responses from the power supply then there is a mismatch between the power supply and the computer LAN settings Also the ping function may be disabled in the power supply see section 6 6 4 In this case do a power supply LAN Reset see section 5 3 and try to connect again 15 5 Cannot View Web Pages Over a Peer to Peer Network If there is no gateway to a network verify the proxy server is disabled in the web browser With Microsoft Internet Explorer open the browser and on the toolbar navigate Tools Internet Options Connections LAN Settings and see the windows open Proxy server do for your LAN These settings will not apply to dial up or VPN connections Verify the Proxy server checkbox is NOT checked 15 6 Cannot
82. use messages are sent and there is no acknowledgement that they have been received Open UDP socket port 8005 to send SCPI commands Responses to queries are sent back automatically with a line feed terminator appended Before opening a UDP socket it is required to open the web page and set the controller access to Multiple Clients see section 6 6 2 Up to three controllers may open UDP sockets to one power supply at the same time 9 9 Other Ports In addition to the ports listed above a port scanner will detect port 8000 This is a helper port for the web pages Do not attempt to communicate with it The Genesys LAN 2 0 does not support raw sockets at port 8001 35 TDK Lambda 10 CONNECTING OVER WAN To connect over Wide Area Network i e the global internet the following settings must be made in the network server 10 1 View Web Pages Over WAN The Genesys power supply LAN interface has two servers for running the web pages One web server is listening in Port 80 The other on port 8000 is an auxiliary to serve internal requests The network administrator must obtain and assign a Global IP for the power supply On the network server the network administrator also must ensure both port 80 and 8000 are exposed to WAN connectivity 10 2 Use Sockets Over WAN The network administrator must obtain and assign a Global IP for the power supply On the network server the network administrator also must ensure
83. value in volts Range is zero to 95 of the present voltage setting Example VOLT LIM LOW 5 100 Query VOLT LIM LOW will return 5 100 inthe example 41 TDK Lambda Errors SYSTEM ERROR may return errors including 302 PV below UVL 306 UVL above PV 222 Data out of range 11 5 4 Set Foldback Protection This command enables or disables the foldback protection When the FB protection is enabled if the power supply goes into constant current CC mode for about a 2 second then the output will turn off the front panel will show Fb and the Questionable Condition register bit 3 will be set high This protection is normally used to prevent a hazard condition if the output load goes into a short circuit For applications where the power supply is normally operating in CC mode such as driving electro magnets the FB protection cannot be used The FB setting is seen on the supply s front panel FOLD LED A foldback fault is cleared by turning the power supply output on again Syntax SOURce CURRent PROTection STATe lt 0 1 OFF ON gt Parameter 0 or OFF will turn the foldback protection OFF 1 or ON will turn the foldback protection ON Example CURR PROT STAT 1 Or CURR PROT STAT ON Query CURR PROT STAT will return ON in the example otherwise OFF 11 5 5 Read Foldback Tripped This query reports if a foldback protection fault has occurred If a fault has occurred it may be cleared by turning the power sup
84. ve OVP Attempt to program voltage above OVP setting or more exactly PV not 5 of voltage rating below OVP 302 PV below UVL Attempt to program voltage below UVL setting or more exactly PV not 5 of voltage rating above UVL 304 OVP below PV Attempt to set OVP below voltage setting or more exactly OVP not 5 of voltage rating above PV 306 UVL above PV Attempt to set UVL above voltage setting or more exactly UVL not 5 of voltage rating below PV 307 On during fault Attempt to set supply output ON when a fault exists 320 Fault shutdown General message for non specified shutdown 321 AC fault shutdown Brown out or phase loss shutdown occurred 322 Over Temperature Over temperature shutdown occurred 323 Fold Back shutdown Fold Back shutdown occurred 324 Over Voltage shutdown Over Voltage shutdown occurred 325 Analog shut off shutdown Shut Off occurred from rear panel J1 58 TDK Lambda ERROR ERROR MESSAGE ERROR DESCRIPTION 326 Output Off shutdown Output Off occurred from front panel button 327 Enable Open shutdown Enable Open occurred from rear panel J1 340 Internal message fault General non specified Internal message fault 341 Input overflow LAN card input data buffer is too full 342 Internal overflow Serial receive buffer in LAN card is full because the Main micro sent
85. ypically 10 above the power supply s voltage rating Example VOLT PROT LEV 70 Query VOLT PROT LEV will return 70 in the example Errors SYSTEM ERROR may return errors including 304 OVP below PV 222 Data out of range 11 5 2 Read Over Voltage Tripped This query reports if an over voltage protection fault has occurred If a fault has occurred it may be cleared by turning the power supply output on again see the OUTP STAT ON command section 11 2 3 Syntax SOURce VOLTage PROTection TRIPped Example VOLT PROT TRIP Responses 0 when no OVP fault is active 1 when supply is shut down because of an OVP fault 11 5 3 Set Under Voltage Limit The under voltage limit keeps the voltage setting from being less than a certain value If the actual power supply output or remote sense point drops below the UVL no fault is reported and the supply continues to operate in the constant current mode you may use the foldback protection to report a fault when this occurs see section 11 5 5 The voltage limit setting made by the front panel encoder or the VOLT command in section 11 2 1 must always be higher than 105 of the UVL setting Likewise the UVL setting cannot be made higher than 95 of the voltage setting The UVL setting may be viewed on the supply front panel by pressing and releasing the OVP UVL button twice Syntax SOURce VOLTage LIMit LOW lt nn nn gt Parameter nn nn will set the UVL to a

Genesys LAN User Manual - TDK

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