SCADAPack E Koyo DirectNET PLC Interface Manual
Contents
1. 3 Preface Purpose The purpose of this document is to describe the SCADAPack E RTU driver for Koyo DirectNET protocol its interface with ISaGRAF and using it for communicating with PLC devices The SCADAPack E RTUs provide a PLC interface for serial Koyo DirectNET PLC devices Koyo DirectNET PLC Interface References e SCADAPack E SaGRAF Technical Reference manual e ICS Triplex ISaGRAF User Manual e PLC Direct Inc DirectNET User Manual 1994 part no DA DNET M e PLC Direct Inc DirectSOFT User Manual 1994 3 SCADAPack E Koyo DirectNET PLC Interface Manual 4 Overview e Master Slave amp DirectNET Addressing Terminology 9 e VO Board amp PLC Data Types 10 Koyo DirectNET PLC Interface 9 4 1 Master Slave amp DirectNET Addressing Terminology Master Slave Terminology PLC devices may communicate with the SCADAPack E RTU using ISaGRAF Slave I O boards PLC device elements are read and the return values cached in the RTU for access through an ISaGRAF input board Similarly ISaGRAF output board data can be transferred to the PLC The RTU s interface with ISaGRAF is described in detail in the SCADAPack E ISaGRAF Technical Reference manual The status quality of the data read from a PLC device is present in RTU system points that can be accessed from within ISaGRAF or external to the RTU When using ISaGRAF Koyo DirectNET PLC I O boards for communication with a Koyo DirectNET PLC device or devices2. 41237 octal PLC addresses configured on the Koyo ISaGRAF I O boards are in Octal RTU PLC Board Types Board Name ref ISaGRAF Data Type PLC Data Types supported koyv16di 000E 16 Boolean Inputs 16 bits of readable data koyv16do OOOF 16 Boolean Outputs 16 bits of writeable data koyviai 0010 1 Analog Input readable data register koyV4ai 0010 4 Analog Inputs readable data registers koyv8ai 0010 8 Analog Inputs readable data registers koyvlao 0011 1 Analog Output writeable data register koyv4ao 0011 4 Analog Outputs writeable data registers koyv8ao 0011 8 Analog Outputs writeable data registers koyc16di 000E 16 Boolean Inputs 16 bits of readable C registers koyc16do OOOF 16 Boolean Outputs 16 bits of writeable C registers ISaGRAF Operate functions may also be used to preset input variables on koyxxxdi and koyxxxai I O boards For more information see the SCADAPack E ISaGRAF Technical Reference Information for Advanced ISaGRAF Users Other I O Boards I O Configurations or Complex Equipment types based on the reference numbers shown in the above table are possible The following need to be carefully observed when configuring new I O interface types e There is an upper limit of 32 I O channels per ISaGRAF PLC Device digital board for the various Koyo board types e There is an upper limit of 64 I O channels per ISaGRAF PLC Device analog board for the various Koyo board types e A plc data type user parameter is defined for PLC
3. 45678 Variable value 123456 7 Reg 65535 integer Variable 99000 Reg pair 99000 0 KoyVxxao IEC REAL Variable 100000 Reg pair 100000 0 real Variable 77 06 Reg pair 77 06 Variable 123456 7 Reg pair 123456 7 integer KoyVxxao IEC DINT IEC DINT Variable 12345678 Reg pair 12345678 z SCADAPack E Koyo DirectNET PLC Interface Manual f TEC REAL Variable 9988 77 Reg pair 9988 77 Koyo DirectNET PLC Interface Communication Interface Serial Koyo DirectNET Communications When using serial Koyo DirectNET Master communications the SCADAPack E RTU communicates with PLC devices using RTU serial port s configured as PLC Device Each port needs to be configured to communicate at the same rate and in the same format as the PLC device s port For example 9600 bps 8 data bits 1 stop bit and no parity A sample cable configuration for connecting a PLC to an SCADAPack ES or SCADAPack ER RTU RS232 RJ12 port is shown in the figure below PDS500 end Direct Koyo DL240 end RJ12 RJ12 RJ 12 Plug Top View 1 6 GND RXD in TXD out GND Figure 8 1 RTU to PLC Cable The SCADAPack E RTU does not assert any hardware handshaking lines when communicating using RS232 RS422 or 4 wire RS485 with its Koyo DirectNET PLC device driver If the Koyo DirectNET PLC requires hardware handshaking e g CTS asserted it needs to be provided in the cabling to the PLC Where 2 wire RS485 communications is used the
4. In firmware versions 7 4 2 and later each ISaGRAF kernel is allocated a separate set of system points for Slave I O boards Earlier versions of firmware used a single set of system points for both kernels The status for the ISaGRAF Slave I O boards reported according to the above rules has two system points associated with it The communications status and the data cache time The age of the cached data for a slave Input Boards is stored in the cache time system point for that board For more information see Section Communication Status amp Data Cache Time Data Cache Time 32 A separate RTU system point is provided to set the background update rate of PLC Output Boards For more information see Section PLC Output Board Default Background Update Ratels The RTU Slave I O board status system points for ISaGRAF Kernel 1 are as follows these points apply for both kernels in firmware versions pre 7 4 2 Ay Point z System Point Description Point Type ae 16 bit unsigned integer ISaGRAF Kernel 1 Slave I O board 1 communication status 53300 read only 16 bit unsigned integer ISaGRAF Kernel 1 Slave I O board 1 data cache time 53301 read only ae 16 bit unsigned integer ISaGRAF Kerel 1 Slave I O board 2 communication status 53302 read only ISaGRAF Kerel 1 Slave IO board 2 data cache time See Gee read only ISaGRAF Kernel 1 Slave I O board 60 communication status 53418 16 bit unsigned integer read only 16 bit unsign
5. configurations each such I O board configuration within the Complex Equipment type counts towards the limit of 100 slave I O boards on that communications channel A corresponding pair of system points relates to each PLC Slave I O board on the lowest RTU port number as described in Section System Points 30 ISaGRAF PUMPCTRL 1 0 connection Fie Edt Tools Options Heb a pg th EA e 2 me first_register 4210 25 gt koyel6di no un ple_data_type IEC DISCRETE CE koyel 6di As mm data_update_rate 10000 27 m koyvi bdo ne awe ple_device_addr 5 CE koyv16do ne maj timeout 0 E ms port 2 koyv16di ne 7 21 amp koyvl bi me Pli C en rul do ne En 4 Ging ne II GI Gr 25 koyvBao we E 52 koyv8ao ue e E 37 gt koyvBa0 ue Te 5 utai ws es C m rut2ai we en Gi mz EN el a2 12 4 43 3 4 En Liz lt f Se Figure 5 1 ISaGRAF Project Multiple UO Boards PLC device communications using these I O boards can be controlled by an ISaGRAF function block koyoctrl Koyo DirectNET PLC Interface 13 5 2 Koyo DirectNET Input Boards Koyo DirectNET PLC Input Board variables are updated at the start of the ISaGRAF application scan The value presented to the ISaGRAF variables is the value returned by the PLC in response to the previous read request This read may have occurred during previous ISaGRAF application scans The data update rate parameter
6. data into ISaGRAF variables Only the C register at the start of each byte can be specified as an address Valid C register addresses are 0 10 20 30 40 etc in octal plc_data type specifies the DirectNET PLC data register type Various PLC data types are supported for Boolean and Analog boards See Section Data Conversion 21 for more information data_update_rate The units for this parameter are set in milliseconds and specify the rate at which the data for the Input board is extracted from the PLC Individual I O boards may have different data update rates allowing prioritisation of data extracted from a PLC Device The RTU may not be able to read requested PLC data within the time set by the data update rate depending on the quantity of data to be read rate of write requests and PLC communication speed In this case the update rates will be slower plc_device_addr This parameter specifies the PLC device address Koyo DirectNET PLC devices on the same communication channel e g multi dropped or bridged need to have unique device addressing in order to be identified ISaGRAF may access data from multiple PLCs via the same communication interface In this case a separate I O board will be required for each PLC device Values for this parameter are usually in the range 1 90 timeout The DirectNET PLC device driver provides a parameter for specifying the communications timeout on an individual I O board i e the timeout applies to communi
7. Data Conversion koyVxxdi koyVxxdo koyCxxdi koyCxxdo I O boards require no data conversion other than the order of discrete bit numbers koyVxxai koyVxxao I O boards require no data conversion other than register pair ordering for 32 bit values Table 7 1 23 below provides examples of Koyo DirectNET data conversion for RTU analog input and analog output Koyo DirectNET PLC I O boards Conversion examples show integer real conversion results including numeric range truncation for koyVxxao ISaGRAF OPERATE function for koyVxxai boards uses same numeric conversion and range truncation when presetting input board variable values as does the corresponding koyVxxao board when setting output board registers Table 7 1 ISaGRAF Koyo DirectNET Data Conversion RTU PLC I O PLC Data Type ISaGRAF A S Conversion Examples Board Type Range Variable Type Reg value 40000 Variable 40000 KoyVxxai IEC UINT Reg value 45678 Variable 45678 0 0 65535 Integer Reg pair value 12345 678 KoyVxxai IEC REAL Variable 12345 Reg pair value 159 876 Variable 159 876 Integer Reg pair value 12345678 KoyVxxai IEC DINT IEC DINT Variable 12345678 231 231 1 Real Reg pair value 9988 77 IEC REAL Variable 9988 77 Variable value 987 Reg 0 KoyVxxao IEC UINT Integer Variable value 50000 Reg 50000 0 65535 Variable value 70000 Reg 65535 Variable value 99 33 Reg 0 Variable value 45678 3 Reg
8. Device I O boards The parameter is a string which describes the data type of data being accessed e g IEC UINT See Section Communication Interfacel25 for more information z SCADAPack E Koyo DirectNET PLC Interface Manual e An additional plc_dev_type hidden parameter string field describes the plc type communication channel type and special controls The value of this field is driver specific e g KC indicates advanced Koyo board k C register board c Koyo DirectNET PLC Interface 21 7 Data Conversion A single ISaGRAF PLC I O board will support a single Koyo DirectNET PLC data type for channels on that UO board Where real ISaGRAF analog variables are attached to an integer ISaGRAF PLC I O board or where integer ISaGRAF analog variables are attached to a real ISaGRAF PLC I O board conversion rules apply as detailed in Section Koyo DirectNET Data Conversion 23 and the SCADAPack E ISaGRAF Technical Reference manual The exception to this is where the PLC data type is IEC DINT Mixed integer and real ISaGRAF analog variables may use IEC DINT and IEC REAL PLC data types on the same I O board also see Sections Koyo DirectNET PLC Data Typesl2 amp Koyo DirectNET Data Conversion 23 Data conversion depends upon PLC Data types described in Section Koyo DirectNET PLC Data Types Ex 22 SCADAPack E Koyo DirectNET PLC Interface Manual 7 1 Koyo DirectNET PLC Data Types The following data ty
9. N used without the safety alert symbol indicates a potentially hazardous situation which if not avoided can result in equipment damage PLEASE NOTE Electrical equipment should be installed operated serviced and maintained only by qualified personnel No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material A qualified person is one who has skills and knowledge related to the construction and operation of electrical equipment and the installation and has received safety training to recognize and avoid the hazards involved BEFORE YOU BEGIN Do not use this product on machinery lacking effective point of operation guarding Lack of effective point of operation guarding on a machine can result in serious injury to the operator of that machine ACAUTION e Verify that all installation and set up procedures have been completed e Before operational tests are performed remove all blocks or other temporary holding means used for shipment from all component devices 6 SCADAPack E Koyo DirectNET PLC Interface Manual e Remove tools meters and debris from equipment Failure to follow these instructions can result in injury or equipment damage Follow all start up tests recommended in the equipment documentation Store all equipment documentation for future references Software testing must be done in both simulated and real environments Verify that the completed s
10. RTU provides RS485 transmitter receiver control internally For more information see the SCADAPack E Communication Interfaces Reference manual z SCADAPack E Koyo DirectNET PLC Interface Manual 9 Data Communication Protocol The following Sections detail the framing of the basic Koyo DirectNET RTU data communication protocols e Koyo DirectNET Serial Communication Format zi e LRC Calculation Method 29 9 1 Koyo DirectNET PLC Interface Koyo DirectNET Serial Communication Format The basic message structure for Koyo DirectNET RTU serial protocol is as follows Read Request M gt S S gt M M gt S S gt M S gt M M gt S S gt M M gt S ENQ ACK HDR ACK DATA ACK EOT EOT Write Request M gt S S gt M M gt S S gt M M gt S S gt M M gt S ENQ ACK HDR ACK DATA ACK EOT enquire if the slave is present acknowledge header containing request definition acknowledge data block acknowledge end of transmission end of transmission enquire if the slave is present acknowledge header containing request definition acknowledge data block acknowledge end of transmission 28 SCADAPack E Koyo DirectNET PLC Interface Manual 9 1 1 HDR amp DATA Format HDR Format Rea g 4 No Target d Data Stell complete ET LR Slave wett Type 209959 address dats B C yp MSB LSB e blocks e ze e s er oa om vara aas ve a Ceo or oa a o aor La aor a
11. SCADAPack E Koyo DirectNET PLC Interface Manual Schier Documentation 2 SCADAPack E Koyo DirectNET PLC Interface Manual Table of Contents Part kh WO N 10 11 Koyo DirectNET PLC Interface 3 Technical Supporti ira deeg sen deece a a a a a aE Aa EES ES E Eege 3 Sate ty Information zeecsccececheceeecedadectcetdevavesGaceczedheceseetcdessdehaevssueQaceevedhedenseedcdert eteevaveegecver er 4 Preface sv 1 zgesi eegt Seege eEeE EES enh EE Seege EE 6 Eelere ENER garneren erven ee RENE ee Eege EE ee 8 4 1 Master Slave amp DirectNET Addressing Terminology ssssscssssssessssssssesesessssesesesesseseacsesseseassesseseanseeseaeacsees 9 4 2 I O Board amp PLC Data Types seid Serial DirectNET Master I O Board Interfaces unn 11 5 1 Multiple De NET DEE 5 2 Koyo DirectNET Input d DEEN 521 input Board Parameters oren i a ele end etna ites 5 3 Koyo DirectNET Output Boards 57321 OQ tp t Board Fatatetetez euer EA orde Meda heen 5 4 Dire ctNET Registers E Operation ten sasvseransnesensennenerarntweindenvenwranenweddhanentwandetewdnbnadnewikdenendnhendennindnndndennnendnddnnenndene Data Conversion 5 1 rteransnresendrenaede ENEE EE ERR EEdE EE EA 7 1 Koyo DirectNET PLC Data Types cscscsssssssssssssesessesesssesssseoeaesssseoesessseeaeasseseansenseceaesenssoesestaseseassenssaransessses 22 7 2 Koyo DirectNET Data Conversion scsssssssssssssssessssssssesesesssseseasseeseseacsessesesessescacaese
12. board can access different PLC register data within the same PLC device or where external physical connections permit or where multiple RTU serial ports are used multiple I O boards can also access PLC register data in multiple PLC devices For example one multi drop RS485 will allow uniquely addressed Koyo DirectNET PLCs to be connected to a single SCADAPack E RTU serial port Two Koyo DirectNET PLCs can each be connected to a separate RTU serial port where both serial ports are configured as PLC Device ports Each the ISaGRAF application s PLC I O boards uses a separate DirectNET request to read or write its data Improved DirectNET communication efficiency can be achieved by grouping DirectNET registers together and using less I O boards with a larger number of channels per board eg KoyV64ai rather than more I O boards with a smaller number of channels A maximum of 100 Slave I O Boards may be configured for PLC communications in total for every communication port and across both RTU ISaGRAF Applications Recall also that each ISaGRAF application has a total limit of 255 I O boards for each board type Communication status is available on the first 60 I O boards for ISaGRAF kernel 1 and 14 I O boards for ISaGRAF kernel 2 See Section System Points 3 for more information ISaGRAF Complex Equipment types are comprised of configurations similar to I O boards Where a Complex Equipment type includes PLC Device I O board
13. boards are used the RTU communicates using serial Koyo DirectNET protocol The settings of the RTU communication port data rates and parity format configurations are used by the Koyo DirectNET PLC device driver RS232 RS422 and RS485 communications are supported PLC Data Types PLC devices present data in a variety of ways through register interfaces The SCADAPack E RTU supports the following commonly used data types when communicating with Koyo DirectNET devices IEC DISCRETE discrete input output c register bit data in IEC61131 3 international standard format IEC UINT unsigned 16 bit integer data values 0 65535 IEC DINT signed 32 bit integer data value 231 231 1 in IEC61131 3 international standard format IEC REAL 32 bit floating point real data in IEEE 754 international standard format See Section Data Conversion 21 detailing the use of these PLC Data Types with the SCADAPack E RTU Koyo DirectNET PLC Interface 11 5 Serial DirectNET Master I O Board Interfaces The koy ISaGRAF boards use the SCADAPack E RTU PLC Device port to communicate with Koyo DirectNET peripheral devices herein described as PLCs e Multiple VO Boards 12 e Koyo DirectNET Input Boards 13 e Koyo DirectNET Output Boards 15 e DirectNET Registers 18 12 SCADAPack E Koyo DirectNET PLC Interface Manual 5 1 Multiple UO Boards Multiple UO boards may be configured within the same ISaGRAF application Each I O
14. cations associated with that board Where this value is 0 the PLC device driver will use the default timeout 500ms Units for this field are in milliseconds port This parameter defines which of multiple SCADAPack E RTU PLC Device ports will be used to communicate with the PLC If only one PLC Device port is configured on the RTU this field is ignored Kam first register 4210 smut plc_data type IEC DISCRETE eT ple_device_addr 5 sms timeout 0 ma port 2 d In the above koyV16di example PLC 5 registers are read every 10 seconds into the ISaGRAF variables on I O channels 1 through 16 A single register is read for the entire I O board as the PLC data type specifies discrete variables IEC DISCRETE So V memory register 4210 0x889 is read The 16 bits of the register are mapped to the 16 I O board channels The default PLC timeout of 500ms is applied as the board s timeout value is 0 Koyo DirectNET PLC Interface 15 5 3 Koyo DirectNET Output Boards ISaGRAF Output Board variables are updated at the end of the ISaGRAF application scan ISaGRAF output variables are sent to the PLC when an ISaGRAF application changes the value of a variable attached to the Koyo DirectNET PLC Output Board They are sent to the PLC after this occurs but the ISaGRAF scan continues executing while the PLC communications are in progress In addition output board data is updated to the PLC under the following condition
15. crosystems com Technical Support Asia Available Monday to Friday 8 00am 6 30pm Eastern Time North America Direct Worldwide 1 613 591 1943 Email TechnicalSupport controlmicrosystems com Technical Support Australia Inside Australia 1300 369 233 Email au help schneider electric com 2 Safety Information Read these instructions carefully and look at the equipment to become familiar with the device before trying to install operate or maintain it The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure The addition of this symbol to a Danger or Warning safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed This is the safety alert symbol It is used to alert you to potential personal injury hazards Obey all safety messages that follow this symbol to avoid possible injury or death Koyo DirectNET PLC Interface 5 DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury A WARNING WARNING indicates a potentially hazardous situation which if not avoided can result in death or serious injury ACAUTION CAUTION indicates a potentially hazardous situation which if not avoided can result in minor or moderate injury CAUTION CAUTIO
16. ed integer ISaGRAF Kernel 1 Slave I O board 60 data cache time 53419 read only Koyo DirectNET PLC Interface 31 The RTU Slave I O board status system points for ISaGRAF Kernel 2 are as follows firmware versions 7 4 2 and later E Point o System Point Description Nuber Point Type ISaGRAF Kernel 2 Slave I O board 1 communication status 53422 16 bit unsigned integer read only ISaGRAF Kernel 2 Slave I O board 1 data cache time 53423 6 bit unsigned integer read only ISaGRAF Kemel 2 Slave I O board 2 communication status 53424 16 bit unsigned integer read only ISaGRAF Kemel 2 Slave I O board 2 data cache time 53425 16 bit unsigned integer read only ISaGRAF Kemel 2 Slave I O board 14 communication status 53448 16 bit unsigned integer read only ISaGRAF Kernel 2 Slave I O board 14 data cache time 53449 16 bit unsigned integer read only 32 SCADAPack E Koyo DirectNET PLC Interface Manual 10 1 Communication Status amp Data Cache Time Communication Status The communication status has a value of zero when a board is functioning correctly A PLC timeout is indicated by a status of 104 Data Cache Time The age of the data in the RTU cache for Koyo DirectNET PLC Input board data is presented in data Cache Time system points The cache time is initialized to zero when the ISaGRAF application starts and increases until a successful read occurs after which time the value is reset to zero The system poin
17. escauacseeecacsesseseacaeseeeeaeaceseeeas 23 Communication InterfaG 225 anteerzeretnsar ees d AEN ed dE EEN cdetedatsarcoues 25 Data Communication Protocol ENEE 9 1 Koyo DirectNET Serial Communication Format 9 1 1 PRS DATA Format rror serenade et eee Ada 9 2 LRC Calculation Method insomnia ern date steed den methanal dn System PointS raszenrrnssen red anae aAa EDA e O a AEE EAA SAKA EE AE Ae SES Ee 10 1 Communication Status amp Data Cache Time EEN 32 10 2 PLC Output Board Default Background Update Rate nnnnnannnnsnnnsnnnensnsnensnansnnnsnsnnnansnennsensnnnsnen 33 DIA IT 34 Koyo DirectNET PLC Interface 3 Koyo DirectNET PLC Interface Sege Documentation 2013 Control Microsystems Inc All rights reserved Printed in Canada Version 8 05 4 The information provided in this documentation contains general descriptions and or technical characteristics of the performance of the products contained herein This documentation is not intended as a substitute for and is not to be used for determining suitability or reliability of these products for specific user applications It is the duty of any such user or integrator to perform the appropriate and complete risk analysis evaluation and testing of the products with respect to the relevant specific application or use thereof Neither Schneider Electric nor any of its affiliates or subsidiaries shall be responsible or liable for misuse of the information contained herein If
18. h 6006 are set from variables on I O channels 1 through 8 Holding registers are written in IEC UINT 16 bit unsigned integer format when the ISaGRAF variable on the I O channel changes and at a rate of every 4 seconds even if they Koyo DirectNET PLC Interface don t change The PLC has 500ms the default to respond to a register write command for up to 8 registers te SCADAPack E Koyo DirectNET PLC Interface Manual 5 4 DirectNET Registers The following table describes the V memory address ranges koyV boards can be used to access any V memory address with data type 31 the user is not required to enter the data type koyC boards can only be used to access the control relays with data type 33 These are addressed by C register number in octal Table 5 1 ISaGRAF Koyo DirectNET PLC Device I O Board Register Access F A oe Memory Type V memory Address octal SE of 10 only octal Koyo DirectNET PLC Interface 19 6 Operation The SCADAPack E RTU ISaGRAF Koyo PLC Device Boards communicate to Direct Koyo PLCs using serial DirectNET communications protocol to Koyo CPU or DCM modules Multi drop Koyo PLCs are supported provided that the external physical interface allows it e g RS485 RS232 RS422 via DCM modules etc For more information see Koyo DirectNET PLC documentation Register Ranges For Koyo PLC types DL240 DL250 DL350 DL450 the ISaGRAF Koyo I O Boards can access PLC V registers in the range 0
19. m oer 17 oe Maximum request frame size 256 bytes DATA Format The Slave ID of the request is returned in the Response The Function Code of the request is returned in the response if there were no errors An error response has the most significant bit of the request function code set on see Error Response Maximum response frame size 256 bytes Koyo DirectNET PLC Interface 9 2 LRC Calculation Method The LRC yields a checksum which is used to verify the communications are being received without errors For a header this checksum is calculated by taking the exclusive OR of bytes between the Start of Header and End of Transmission ETB For a data block the checksum is the exclusive OR of bytes between the STX and ETB ETX characters To take the exclusive OR just convert the HEX values to binary and then examine the bits For each bit position an even number of 1 s results in a checksum value of 0 An odd number of 1 s results in a checksum value of 1 s SCADAPack E Koyo DirectNET PLC Interface Manual 10 System Points RTU system points are provided to indicate the status of some ISaGRAF VO boards that are used for Slave I O communications with peripheral devices such as PLCs Where multiple ISaGRAF Slave I O boards are present in an ISaGRAF application consecutive sequential system point pairs are used for the next Slave I O board regardless of what PLC port the boards are connected to
20. m Point Description Point Point Type Number ISaGRAF PLC Output Board Background Update Rate Secs 53420 32 bit unsigned integer The background updates are disabled by setting the system point value to 0 zero This may be used to optimize the PLC Device communications bandwidth where background writes are not appropriate or necessary 34 SCADAPack E Koyo DirectNET PLC Interface Manual 11 Diagnostics The SCADAPack E RTU indicates configuration or communication diagnostics via Diagnostic Display mode from a Command line session Configuration diagnostics are indicated via ISaGRAF I O board messages if ISaGRAF PLC I O boards are not opening These are displayed when in Diagnostic Display mode use DIAG command at command prompt Communication diagnostics for the Koyo DirectNET serial driver are controlled by the PLCDIAG command at the RTU command prompt The syntax is as follows PLCDIAG DISABLE filter name filter name PLCDIAG ENABLE filter name filter name Where filter name is one or more of the following combinations all Koyo DirectNET diagnostic messages TX transmit packet bytes display for Koyo DirectNET Master Indicating transmitted data by M gt S Where is the slave address RX receive packet bytes display Indicating received data by M lt S Where is the slave address COMMS_ERROR communication error diagnostics such as DIRECT gt gt KOYO N ENQ Error on PLC 1 PLC_ERROR er
21. ng in order to be identified ISaGRAF may access data from multiple PLCs via the same communication interface In this case a separate I O board will be required for each PLC device Values for this parameter are usually in the range 1 90 must wite rate The unit for this parameter is the millisecond and specifies the rate at which all data for the Output board is written to the PLC Between must write rate periods data is written to the PLC only when the ISaGRAF output variable values change Individual I O boards may have different must write rates allowing prioritisation of data sent to a PLC Device See Section PLC Output Board Default Background Update Ratel 32 timeout The Koyo DirectNET PLC device driver provides a parameter for specifying the communications timeout on an individual I O board i e the timeout applies to communications associated with that board Where this value is 0 the PLC device driver will use the default timeout 500ms Units for this field are in milliseconds port this parameter defines which of multiple RTU PLC Device ports will be used to communicate with the PLC device If only one PLC Device port is configured this field is ignored mmm first register 5777 mm plc data type IEC UINT km data update rate 4000 waor plc device addr 2 w timeout 0 mg port 1 0 ISIS ISIN EHEER In the above koyV8ao example PLC 2 V memory registers 5777 throug
22. on the I O board sets the scan rate of the PLC data Controlling PLC Device Communications PLC device communications using these I O boards can be controlled by an ISaGRAF function block koyoctrl The En_RD parameter on the block affects PLC device Input Boards For more information see SCADAPack E Function Block Reference manual for more information OPERATE on Input Boards The ISaGRAF OPERATE function may be used on a DirectNET PLC Input Board variable provided that the PLC register read by the input board can also be written This permits PLC registers to be inputs into ISaGRAF but have them Preset in the PLC by the ISaGRAF application For more information see the SCADAPack E ISaGRAF Technical Reference manual PLC device communications resulting from the use of the OPERATE function can be controlled by an ISaGRAF function block koyoctrl The En_WR parameter on the block affects control operations being sent to the PLC device For more information see SCADAPack E Function Block Reference manual for more information a SCADAPack E Koyo DirectNET PLC Interface Manual 5 2 1 Input Board Parameters first_register for koyV specifies the DirectNET PLC V registers to access when reading from PLC data into ISaGRAF variables The PLC data type accessed is specific to the Slave PLC I O board type and board address see the table below For koyC specifies the DirectNET PLC C registers to access when reading from PLC
23. pes are supported by the Koyo DirectNET serial interface e IEC DISCRETE Binary discrete data packed into a 8 bit values where the least significant bits of the value represent the low discrete bit numbers E g where a protocol message contains 16 discrete coils say addresses 11 through 26 coil 11 is represented by the least significant bit of the first byte in the protocol and coil 26 is represented by the most significant bit of the second byte in the protocol This data type may access PLC inputs coils or V memory bits e IEC UINT Unsigned 16 bit integer value Valid values are 0 65535 This is the default data type used by the RTU for Koyo DirectNET PLC register data May access PLC V memory e IEC DINT Signed 32 bit double integer value organized as two words in the protocol in Little Endian format least significant word first Valid values are 231 231 1 I O boards utilizing this data type will automatically select between IEC DINT data format for ISaGRAF integer analog variables and IEC REAL data format for ISaGRAF real analog variables on the I O board Each I O board channel generally accesses a consecutive pair of 16 bit registers e IEC REAL IEEE 754 format 32 bit floating point real value organized as two words in the protocol in Little Endian register format least significant word in first register Accesses a consecutive pair of 16 bit holding registers Koyo DirectNET PLC Interface 23 7 2 Koyo DirectNET
24. ror diagnostics on error messages returned by the PLC such as direct gt gt KOYO Data Block Error Multiple filters may be specified at the same time with the PLCDIAG command Use the command line DIAG command to enter RTU Diagnostic Display mode after the filters are set E g PLCDIAG DISABLE TX RX PLCDIAG ENABLE COMMS_ERROR PLC_ERROR DIAG Koyo DirectNET PLC Interface 35
25. s e When the ISaGRAF application starts output board data is written e Ifthe PLC does not respond to a control it is re sent until it is responded e Output board data is written at a background must write rate PLC device communications using these I O boards can be controlled by an ISaGRAF function block koyoctrl The En WR parameter on the block affects PLC device Output Boards For more information see SCADAPack E Function Block Reference Manual for more information 16 SCADAPack E Koyo DirectNET PLC Interface Manual 5 3 1 Output Board Parameters first_register for koyV boards this field specifies the PLC data V registers to access when writing from ISaGRAF variables to PLC data The PLC data type accessed is specific to the PLC I O board and board address See Table 5 1 18 For koyC boards this field specifies the DirectNET PLC C registers to access when reading from PLC data into ISaGRAF variables Only the C register at the start of each byte can be specified as an address Valid addresses are 0 10 20 30 40 etc in octal plc_data type specifies the Koyo DirectNET PLC data register type Various PLC data types are supported for Boolean and Analog boards See Section Data Conversionl21 for more information plc_device_addr This parameter specifies the PLC device address Koyo DirectNET PLC devices on the same communication channel e g multi dropped or bridged need to have unique device addressi
26. t corresponding to a PLC Device input board may be used by the ISaGRAF application to determine the suitability of using the input data from the input board l e if the value is too high then the data is stale and the ISaGRAF application may choose not to use it Each Input board has its own data cache time system point The data cache time system points for Output boards indicate zero Koyo DirectNET PLC Interface 33 10 2 PLC Output Board Default Background Update Rate The following SCADAPack E RTU system point controls the default background update rate of PLC Device Output Boards on the RTU Where an I O board s must wite rate parameter is zero or if the older style PLC ISaGRAF I O boards that don t have a must write rate are in use the RTU writes ISaGRAF PLC output board variables to the appropriate PLC at this rate This occurs regardless of whether changes are occurring on the ISaGRAF output variable or not The purpose of the must write is so RTU output variable values are updated in the PLC For example if the PLC is initialized or replaced then the output values are re written by the RTU The default value of the background update rate is 60 seconds It may be adjusted by the user or specified in an RTU configuration and is a non volatile RTU system point that is retained by the RTU Changes in the background update rate take effect when an ISaGRAF application is loaded and started or re started Syste
27. the SCADAPack E RTU is a Koyo DirectNET Master The PLC device s need to be Koyo DirectNET Slave s DirectNET Addressing Terminology As used in the Koyo DirectSoft programming environment the SCADAPack E RTU uses Octal V memory address numbering for V memory and Octal C register numbers for C registers A V memory address specifies which 16 bit register maps to the first I O channel on the ISaGRAF board A C register address specifies which C register bit maps to the first O channel on the ISaGRAF board These register addresses are converted to Data Type and Hexadecimal DirectNET Reference Address for use by the DirectNET protocol The user does not have to deal directly with these Data Types or reference addresses For example 1 A V memory read is done by a koyV ai ISaGRAF I O board specifying an address of 01400 in octal The RTU then sends a DirectNET Data Type 31 V memory reference address 0x0301 read request to the PLC 2 AC register read is done by a koyC di I O board specifying an address of 0020 in octal The RTU then sends a DirectNET Data Type 33 Output reference address 0x0183 read request to the PLC See Section DirectNET Registers 18 for details on reference address ranges and Data Types 10 SCADAPack E Koyo DirectNET PLC Interface Manual 4 2 UO Board amp PLC Data Types UO Board Types Where a SCADAPack E RTU has one or more of its serial ports configured as PLC Device and koy ISaGRAF I O
28. you have any suggestions for improvements or amendments or have found errors in this publication please notify us No part of this document may be reproduced in any form or by any means electronic or mechanical including photocopying without express written permission of Schneider Electric All pertinent state regional and local safety regulations must be observed when installing and using this product For reasons of safety and to help ensure compliance with documented system data only the manufacturer should perform repairs to components When devices are used for applications with technical safety requirements the relevant instructions must be followed Failure to use Schneider Electric software or approved software with our hardware products may result in injury harm or improper operating results Failure to observe this information can result in injury or equipment damage 1 Technical Support Support related to any part of this documentation can be directed to one of the following support centers 4 SCADAPack E Koyo DirectNET PLC Interface Manual Technical Support The Americas Available Monday to Friday 8 00am 6 30pm Eastern Time Toll free within North America 1 888 226 6876 Direct Worldwide 1 613 591 1943 Email TechnicalSupport controlmicrosystems com Technical Support Europe Available Monday to Friday 8 30am 5 30pm Central European Time Direct Worldwide 31 71 597 1655 Email euro support controlmi
29. ystem is free from all short circuits and grounds except those grounds installed according to local regulations according to the National Electrical Code in the U S A for instance If high potential voltage testing is necessary follow recommendations in equipment documentation to prevent accidental equipment damage Before energizing equipment e Remove tools meters and debris from equipment e Close the equipment enclosure door e Remove ground from incoming power lines e Perform all start up tests recommended by the manufacturer OPERATION AND ADJUSTMENTS The following precautions are from the NEMA Standards Publication ICS 7 1 1995 English version prevails e Regardless of the care exercised in the design and manufacture of equipment or in the selection and ratings of components there are hazards that can be encountered if such equipment is improperly operated It is sometimes possible to misadjust the equipment and thus produce unsatisfactory or unsafe operation Always use the manufacturer s instructions as a guide for functional adjustments Personnel who have access to these adjustments should be familiar with the equipment manufacturer s instructions and the machinery used with the electrical equipment e Only those operational adjustments actually required by the operator should be accessible to the operator Access to other controls should be restricted to prevent unauthorized changes in operating characteristics
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