PDF User Manual - Antona Corporation
Contents
1. 818 783 4299 DB9 RS 485 Signals multiple clients multidrop DB9 female FUNCTION IDENTIFICATION CONN CONN 42 _ GROUND ground for RS 485 422 Sune DATA RS 485 minus input output as ee not used Lee 4 GROUND __groundfor RS 485 422 HN IO A E AS 6 GROUND groundforkS 485 422 a not used op mnotuwed O 9 SHIELD Connector shield ground Photo 2 below shows a typical transmission and reception sequence over an RS 485 2 wire interface using the AutoTransmit adapter feature The top trace shows the data transmitted with a scope probe on the TX RC DATA combined line The 2 group of noisy looking characters is the response received back from a remote device about 4 ms after the last character is sent The lower trace 2 shows the signal after being cleaned up by the adapter The AutoTransmit feature was used to perform the control in transmitting receiving the 9600 baud data depicted through a MODCOM polled response protocol industrial controller 2 00 Y M2 00ms A Chi f 2 04 Y Photo 2 2 wire interface example 4 Wire RS 485 A 4 wire RS 485 interface uses 2 wires to transmit to all connected peripheral receive data lines While 2 additional wires are connected from all peripheral controlled transmit pairs back to the server s receive wire pair In such an arrangement the server can does not need to use a polled response protocol The client and server do not h2. 1 ANC 6204 jumper locations A sb E eit ans gate te oT ad eben Ae eben eatate aio 4 OPENING THE PLASTIC ENCLOSURE ssscceeeseeeeeteees wd TRANSMIT AND RECEIVE CONTROL JP1 AND JP3 Figure 2 transimit receive CO a ies Transmit Enable TB A TRE OSE NBII EN BREE RARE i Photo 1 Auto Transmit Operation RECEIVE ENABLE JP3 ts scvcdcees cosstaaesteceacsctenveseleva A eucsnibeSudeataces e asi RS 232 HANDSHAKE JPZ sess tec cssech ose cneadan cede aonccnes catevaves sugared saueas tvendencesana EEEE AEE AEEA EEE NE NENEA NEANKE ENEAKO RERE EEEE ETETE ETNEK Figure 3 RS 232 RTS CTS TTL INPUT OUTPUT JP4 Figure 4 TTL I O jumpering LOGIC LEVEL RESPONSE lt s doe cehesesccocecnceeas ches ENEE ENESA EEEE EA EAEEREN ANAE EESE EE AEA EEE RAEE EE EENE AESA EA EEEE AEAEE ENEE E NEETA EA CABLE TERMINATION JPS a ii e Figure 5 terminating resister jumpering aes TX RX PIN REVERSE JUMPERS IPO TP TA a Figure 6 Tx Re reversing jUMpers a RECEIVE DATA SOURCE JP8 JP9 Figure 7 USB receive source jumpers 2 WIRE 4 WIRE INTERFACE JP10 JP11 Pigure 8 2 4 wire intert AC aii ste saseeenavaedyesunuptsoncsucesovscuntastdvaguaee wares EEEE EAE 9 LED INDICATORENABLE 3P 12 ria a A A EA A E aiii 9 Figure 9 LED enable aks ADAPTER INSTALLATION OVERVIEW ccoo E E A A 9 ADAPTER CONNECTOR INTERFACING ooomio oionirdicdn add ains a ONE E RA A E RA a diia 10
3. 2Kbaud The best way to determine if termination is causing your interface not to work is to enable the ANC 6204 terminating resister and install a 120 ohm resister onto the last piece of RS 485 equipment on the cable Check also that you have not over terminated the cable by having more than two resisters installed other than one at each end of the cable run Access one end of the cable and use a multimeter set to the 200 ohm scale You should measure about 60 ohms if there are two 120 ohm resisters in parallel across the cable If you are using multiple Antona adapters only one at each end of the cable run should have JP5 enabled Likewise check any other piece s of equipment on the cable if they contain termination resisters to make sure that only one of them is enabled at the ends of the cable run Antona Corporation 17 818 783 4299 Powering Be sure that the USB port or USB hub connected to the adapter is powered Many newer laptop portable or notebook computers have battery power saving modes that turn off USB ports if no activity is detected Check to be sure that the USB port or USB hub is being powered for adapter operation Program Operation The application program you are using will need some setup performed selecting the serial comport baud rate parity number of data bits stop bits and setting the level of the handshaking signals Usually for multimedia type interfaces the baud rate is 38 4 Kbaud Odd parity 8 data b
4. ANC 6204 RS 232 CONNECTIONS MALE DB 9 u csccssscsssssesscsccscsssssssssscsscssscsnccsnesscssessessnssseesscsssssncssncsscssesssceseesscssesscssecssessesssessoees 10 DB9 To DB25 PIN TO PIN CHART FOR USE OF ADAPTER ON A DB25 TYPE CONNECTOR cssccsssssseesseeeeeseeeeseneeeeseeeeeseaeeeeeaeeceneaeecenaeeeneaaeeeneneees 10 RS 422 CONNECTIONS TO THE ANG 6204 bi cicicscsscssscsssdesecveccsotessecesssesussvesesdesecssedecsasseevesssuevostesessectesscsscdsenstsseesbesestucvedesvenscsndasesesssecsvess 10 DB9 FEMALE RS 422 SIGNALS FOR SERVER MULTIMEDIA CONTROLLER ccsssssceessseceeseeeeeseeecseaeeceeeeeesneeeseeeecnaeecesaaeceneaeecesaeeceeasesenaeees 11 DB9 FEMALE RS 422 SIGNALS FOR CLIENT RECEIVE FROM SERVER c cccsssscesesseeeeeneecesneeecseeeeceeaeecesaeeceeseeeceeaeeecnaeeceesaeeeneaeeeeeaeeeeeaeeeeesaeees 11 RS 485 TWO AND FOUR WIRE INTERFACING essesessossesescosoesescosossescososseoossesescosoesescosossescososseseososseseseosoesescesossescesossescesossesesesssesessesessee 11 LIWMRER SA i DB9 RS 485 SIGNALS MULTIPLE CLIENTS MULTIDROP Photo 2 Z Wite Interface example ii nde aiii dean AMES en cesiasencegesvaeavesaneeasdaseasaved su dvaeecsuscueegss cvawenoneseaaceneussesieseataassaenadeanteniesencvasdcoueeavateneunsneouceaeeeaaaas sncuenetasceeeasaae T TL INTERFAGE PIN OUT Si iria APPENDIX A ANC 6204 SOFTWARE DRIVER VIRTUAL COM PORT VCP c scsssscssssssscssssssscssscsessssssssssscssscssssscnssssscssnesons 1
5. VCP Unlike other serial adapters that Antona manufactures the ANC 6204 requires software to be loaded to complete the installation The installation and application of the software is in most cases straightforward and a one time operation Note that if you attach multiple adapters to a system a separate driver must be installed for each You will be prompted to do this whenever you install a new adapter or swap an adapter This is because each adapter has a unique serial number so the driver software can determine which serial device the user is interfacing to on the USB port The user may have one adapter directing output to an RS232 printer and another adapter running an RS422 SMPTE compatible tape deck Separate drivers insure that the data is being routed to the proper serial device Remember also that if you do a system restore to a date before the USB drivers were installed they will have to be re installed for operation The process is 1 Download and un ZIP the appropriate driver and virtual comport VCP for your system 2 Plug in the ANC 6204 to a USB port connected to your system directly or through a USB hub 3 The computer will detect the new hardware and prompt you through the software installation 4 Set up your application software to direct serial communication through the new USB adapter For the most common use using the adapter in an application where it emulates a serial port you need to install the driver softwar
6. are defined from you will connect TX to TX which is incorrect in RS422 interfacing Make sure that you have the TX on the Antona adapter connected to the RC on the RS422 equipment and TX connected to RC same for the signal coming back from the RS422 side make sure that the Antona adapter s RC is connected to the TX and that the RC is connected to the TX on the RS422 equipment side Pin 1 on the adapter should be connected to the ground of the RS422 485 equipment Multidrop Cabling RS 485 2 wire interface JP1 MUST be set to the AT position when using a 2 wire interface That jumper function enables the transmit function on off control and the adapter transmit pair must be turned off in order to receive data through the adapter in 2 wire installations Check to make sure you have connected the plus signal lines to the plus D Data signal lines and ditto for the negative to the negative D Data signals This is the opposite of the 4 wire interface above Try connecting just one piece of equipment to the adapter for debugging both the cabling and the software interfacing Make sure that the JP10 11 jumpers are set for 2 wire interfacing as described in the manual s jumper option section Remember that multidropped peripherals must each be assigned a unique device code Check with the specific equipment s Antona Corporation 16 818 783 4299 User s Manual for setting this along with protoco
7. format and follow the instructions as detailed Be sure to make copies of the software and user guides then archive them for future reference Antona Corporation 14 818 783 4299 4 Locate the device manager by pressing start settings then control panel Double click system click on the hardware tab then click on the device manager button Locate the ports COM amp LPT entry and click on the sign in front of that heading The window should display something like this Device Manager E a S File Action View Help e mea emalga IEEE 1234 4 compatible printers H A IEEE 1284 4 devices 1 59 Imaging devices gt Keyboards EH Mice and other pointing devices La Modems Monitors Y Multifunction adapters H E Network adapters BY Ports COM amp LPT Y Communications Port COM1 Y ECP Printer Port LPT1 Y NetMos PCI ECP Parallel Port LPT2 F NetMos PCI Serial Port COM3 AF NetMos PCI Serial Port COM4 Y EEE E Processors 1 6 Sound video and game controllers H a Storage volumes E System devices El Universal Serial Bus controllers Look for the USB Serial Port COMx line to determine what comport the ANC 6204 has been assigned to In the example highlighted above the adapter has been set for COM8 The user needs to go into the specific user application set up or menu item and redirect the serial I O to the comport as
8. occasionally they can go bad Of the thousands we have shipped there have been around 20 that arrived non operational Damaged in shipping or infant component burnout but most returns have incorrect jumper settings We do warranty our adapters so if it still does not work call Antona and we will work out an adapter exchange We can not ship out a replacement adapter before receiving back an adapter You can have us ship a replacement adapter charge your credit card and then charge back the credit card for the original adapter purchase price shipping can not be refunded Antona Corporation 18 818 783 4299 Appendix C ANC 6204 Transmit Receive LEDs The LED transmit Tx and receive Rc indicators help in setting up and debugging initial installations of the ANC 6204 adapter by providing a quick visual check of data flow In both 4 wire and 2 wire applications the LEDs will read the individual transmit and receive states The added LED circuitry is very simple consisting of 2 ultra bright LEDs and 2 10K current limiting resisters that monitor the transmit and receive electronics At 5V each LED draws about 100 microamps 0001 Amp The light produced is easy to see in a normally lighted room with the plastic enclosure on or off the adapter Sending or receiving a single character at 38 4 Kbaud would normally be hard to see due to the very brief LED flash produced The adapter stretches the LED on time to make even one cha
9. the upper and middle pin labeled AT Auto Receive to turn receive data off whenever the transmit driver is active See figure 1 or the schematic for the location of JP3 On a 2 wire interface if data is being transmitted and the receiver is also enabled anything transmitted will be looped back into the serial port Since the echoed signal is the actual data that was transferred to the interface cable being able to see the transmitted data echoed back may be of use for testing diagnostics or authenticating of the data output Receiving back any other data but the transmitted data would indicate that another device connected to the RS 485 network had transmitted at the same time a contingency problem RS 232 Handshake JP2 AS SHIPPED NO HANDSHAKING PS JP2 HANDSHAKING Fe EN JP2 Figure 3 RS 232 RTS CTS Two jumpers of JP2 are used to enable external operation of CTS and RTS This feature is only of interest to users of the RS 232 interface port The jumpers should stay in the horizontal no handshaking position unless the user is connecting an older piece of RS232 equipment that supports hardware handshaking to control data flow See figure 3 above or the schematic for the location of JP2 Antona Corporation 6 818 783 4299 TTL Input Output JP4 MAS SHIPPEDX T DISABLE TTL aon ENABLE TTL bk T JP4 Figure 4 TTL I O jumpering The ANC 6204 adapter can also be used in applications where a low volt
10. typical of 4 wire interfaces Setting both jumpers to the vertical position shown labeled 2 wire in figure 8 above shorts Tx to Rc and Tx to Rc The user then connects pin 3 for Data D and pin 8 for Data D on the RS 485 multidrop network Be sure to set the transmit output jumper JP1 to AT to automatically turn off the transmit lines when using this interface mode and set JP3 for automatic turn on or always on as needed LED Indicator Enable JP12 xAS SHIPPEDX yJP12ELD LEDS ENABLED qe JP12 SLD DISABLE CUT TRACE ON SOLDER SIDE Figure 9 LED enable The LED transmit and receive indicators have been enabled by default The 2 pads located near the LD silk screened on the PCB may be used to enable or disable their operation Many times after the interface is installed and working the LED indicators are not needed and in some applications a source of illumination within the work room or factory floor is not desired See Appendix C for more details on the LED circuit operation Adapter Installation Overview Download the software drivers un zip them to a subdirectory before plugging in the adapter This is just the opposite of the usual instructions for adapter installations Plugging in the Antona USB adapter tells the PC or Apple operating system that a new peripheral has been attached and needs a software driver installed The adapter can be plugged into any type A USB receptacle Follow the pro
11. 4 APPENDIX B ANC 6204 TROUBLESHOOTING GUIDE oocconccooccoonconoccnnoconnccanoconncconoconocconaccnncconoconocconnccnoconocconncconocorocooncccnccono coco cccnncno 16 LOOPBACK Testi ii EAR E EARS AEAEE AAA ia iii 16 CABLING Most common proble ve ccceccciccissssivezensecnasveccesassceccestestesnsesedentsconuscsaceamteneceaeedassvaeuscondaxedeasesedeadeuabecssstavsasigeancencevadestcccsensvecssnss 16 Pin Signal Definitions SMED i ean a ate 16 Data Direction JUMP dd c 17 Data Control Jumpers a A A AA A RN AAA Ads 17 Cable Lerma A cis BIN E Es Program Operation Serial Equipment Ea INOW WIE Boos A i 18 APPENDIX C ANC 6204 TRANSMIT RECEIVE LEDS cccccssssssscsscssssscsssscsssnsscssesssesssesessnsccssessesssssesessnssessesscssessesessssessosoess 19 APPENDIX D CIRCUIT BOARD SCHEMATIC sssscsssssssssscsscssssscssssssssnsssssnsccscesessnseessessssessnesessscessesscsesssesossnssessesscssessessssssesensoess 20 Antona Corporation 2 818 783 4299 Features General USB 1 1 and USB 2 0 compatible Powered from port No external power supply Baud rates to 921 6Kbaud tested to 1 2Mbps RoHS Compliant Lead Free parts PCB and construction LED transmit and receive status indicators RS 422 RS 485 Meets or beats ElA 485 and ElA 422 signal level specifications SMPTE pin compatible female DB 9 Transmit data at distances up to 4 000 feet 1 219 2 m 4 wire full duplex or 2 wire half dupl
12. P6 and JP7 The electronics are exactly the same the 2 transmit and 2 receive signal lines are exchanged on the RS 485 422 side of the adapter by changing these 4 shunts Receive Data Source JP8 JP9 XAS SHIPPED EILE ON i pF EJ m JPS 280 pame RS422 485 TTLi RECEIVE ON DF Bi cm JP8 JP9 Figure 7 USB receive source jumpers These jumpers offer a limited but useful feature to the designer The adapter will always transmit data to both the RS232 male DB 9 and RS422 485 DB 9 female connector For receive data JP8 9 allows the designer to receive data from both interfaces or disconnect the receive signal from either of the sources When shipped both interfaces are set to receive data input into the USB port The adapter can only input data from one source at time There are some installations where disabling the unused port interface might be required Note that the letters DF are near to the Differential RS422 485 jumper 8 and that CM is lettered near the jumper 9 Comport RS232 interface Antona Corporation 8 818 783 4299 2 Wire 4 Wire Interface JP10 JP11 xAS SHIPPED iR 4 WIRE BovP10 2 WIRE LOOPBACK Figure 8 2 4 wire interfacing These two 2 pin jumpers connect the TX lines to the RC lines for configuring the ANC 6204 for 2 wire multidrop interfacing The jumpers are disabled when shipped for use with separate transmit and receive wire pairs
13. Rev B 5 00 ANC 6204 USB to RS 232 RS 485 422 and TTL Serial Communications Adapter Antona Corporation Los Angeles CA Antona Corporation i 818 783 4299 Antona Corporation Copyright Copyright c 2009 by Antona Corporation All rights reserved No part of this publication may be reproduced transmitted transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of the Antona Corporation of Los Angeles California Warranty Antona Corporation products are warranted to be free from defects in materials and workmanship for a period of one 1 year from the date of original shipment to customer This warranty is limited to the replacement or repair of parts not subjected to misuse neglect unauthorized repair alteration except card options accident or failure due to the effects of static electricity discharge In no event shall Antona Corporation be liable to the purchaser for loss of use profit or consequential damages or damages of any kind including but not limited to accidental loss or damage to other equipment arising out of use of Antona Corporation equipment whether or not said equipment was used properly Antona products are not suitable for any critical or life support functions Customers may use Antona s products in office
14. a YAW 120 ohm termination resister built in that can be placed across the receive wire pair by setting jumper 5 JP5 located over the transmit receive setting jumpers JP6 7 See figure 5 above or the schematic for the physical location Antona Corporation 7 818 783 4299 Tx Rx Pin Reverse Jumpers JP6 JP7 AS SHIPPED i SERVER JP6 bal MASTER JP EG Asa A CLIENT JP6 ff JP ll Figure 6 Tx Re reversing jumpers These two jumper sets designated JP6 and JP7 on the ANC 6204 schematic allow the designer to swap the transmit and receive pairs on the RS 422 side of the adapter The jumpers ONLY change what signals go to what pins on the DB 9 female connector nothing more The jumpers only matter when a 4 wire RS 422 interface is involved and it is desired that the adapter appear to be an RS 422 client The configuration as shipped from Antona is set for server Figure 1 shows the jumper locations on the ANC 6204 circuit board and figure 6 above shows an isolated view of the jumper settings The user can move all four jumpers on the card from the horizontal server controller configuration to the vertical client remote configuration The four jumpers must be either all horizontal or all vertical for adapter operation For the most common RS 422 interfacing use the default jumpering of JP6 7 as shipped The only difference between the server and client function are the jumper positions of J
15. age TTL serial signal is needed for input and output In addition to enabling JP4 by removal the user needs to enable JP5 described below by installing to complete the TTL level circuitry The input must be negative true the most common serial input sense but both polarities of output digital signal are available This feature is probably most useful for the product designer electronics experimenter or in an electronics lab If you enable AutoXmit JP1 and set JP10 11 for 2 wire interfacing you can use 1 wire to transmit and receive TTL data The adapter can be directly interfaced with a microcontroller component or special purpose interface chip by enabling this TTL input and output feature Logic Level Response The table below gives the user an idea of how the adapter responds to TTL input and the corresponding output voltage levels These values may vary by 20 TTL Input Comment Low lt 1 9v Inverted logic level High gt 2 6v Inverted logic level TTL Output Comment 4 9v typical TTL output high 1v typical TTL output low Cable Termination JP5 XAS SHIPPED bk R gps NO ae TERMINATION R RECEIVE P amp P VPS TERMINATED 120 OHM FTP Figure 5 terminating resister jumpering For cable lengths greater than 150 feet resister termination across the remote receive pair end of the cable may be necessary to dampen out a reflected data signal The ANC 6204 has
16. ave to wait for a specific polling message Only one connected client device can transmit at a time so the software must determine if two or more devices have transmitted at the same time collisions detected as receive errors by the server and then signal the clients to stagger their transmissions For systems where there are many clients that only occasionally transmit to the server this arrangement has the shortest latency between a client transmit to the transmission of server data Follow the RS422 Connections to ANC 6204 table for pin connections TTL Interface Pin outs The table below shows the signal pins for TTL use Pin definitions per the factory set jumpers except for removing JP4 and installing JP5 to enable TTL input Antona Corporation 12 818 783 4299 Pin Function RS422 Designation Comment 7 Inverted TTL input to adapter RC Inverted RS232 level input 3 Inverted TTL output from TX Inverted RS232 level adapter TTL output 8 TTL output from adapter TX In phase RS232 level TTL output 1 Ground ground Signal ground reference The author has used the TTL interface and notes there is one additional mode the ANC 6204 Antona Corporation 13 offers if JP1 and JP3 are set for AutoXmit as described above The user can then multiplex both TTL transmit and receive over a single wire plus ground line 818 783 4299 Appendix A ANC 6204 Software Driver Virtual Com Port
17. e and then install the comport software VCP 1 Select the software driver based on your operating system The latest driver and VCP Virtual Com Port software is available at http www ftdichip com FTDrivers htm On the FTDI website most operating systems offer two types of driver software a virtual COM Port VCP drivers and direct D2XX drivers The VCP driver emulates a standard PC serial port such that the USB device may be communicated with as a standard RS232 device The D2XX driver allows direct access to a USB device via a DLL interface To locate the drivers you want to install for a device select which of the driver types you wish to use VCP or D2XX and then locate the appropriate operating systems With the exception of Windows 98 and Windows ME all devices are supported in each driver package Create a subdirectory on your system s hard drive download the appropriate software into it and then un zip the files 2 Plug the ANC 6204 adapter into a type A receptacle on the PC Mac or attached USB hub This should cause the system to detect and prompt you through the software installation If you are not prompted after plugging in the adapter check the USB cable connections and insure that you have not previously installed the software on the system 3 Installation guides for the various software drivers are available at http www ftdichip com Documents InstallGuides htm Download the appropriate guide in PDF
18. eive are enabled always If there is any question that the adapter powering may be causing a problem now would be a good time to read the paragraph below on POWERING Use a simple terminal program to test that characters sent out the serial port are echoed back through the adapter If you use a different terminal program and that the program is set to control the serial port the adapter is addressed for This is a very simple test of the adapter The adapter operation in loopback does not rely on baud rate parity stop bits but the actual application program you are using will see PROGRAM OPERATION below CABLING most common problem If one of the interface wires is not connected open or shorted the whole interface will appear not to be working Try using another cable or try the loopback test described above at the end of the cable to verify operation If you can not get the loopback test to work through the cable it will not work in your application Even cables purchased with molded ends can be damaged Pin Signal Definitions Setting RS 422 4 wire interfaces Make sure that the JP6 7 jumpers are set for desired interfacing per the manual s jumper option section Take a look at the manual of the RS422 485 equipment that you are trying to control Be sure that the pin definitions on the equipment tell you the signal names not what they are suppose to connect to This sounds simple but unless you know which direction the pinouts
19. ex operation Operate in multidrop RS 485 or multipoint RS 422 applications Selectable data loopback or echo suppression Choice of fixed or auto controlled transmit and receive AutoXmit Terminate resistor jumper 120 ohms on input RS 232 Meets or beats ElA 232 signal level specifications Pin compatible to a PC comport DCE male DB 9 TTL Input Output jumper for USB to TTL serial interfacing o 1 1 o o Overview The ANC 6204 adapter converts the USB Universal Serial Bus port transmit receive signal on a personal computer PC or Apple computer equipped with a USB type interface into an RS232 serial comport a differential noise immune RS 422 485 compatible port or a TTL level signal The RS 422 interface pin outs on the DB 9F connector follow the SMPTE format used by many types of multimedia equipment manufactures Sony Grass Valley etc The adapter interface voltage levels produced meet the ElA 232 TIA 232 RS 485 and RS 422 signals The adapter finds wide use in high speed long distance serial communications multidropped 2 wire interfaces or to interface a PC with equipment that uses an RS 485 or RS 422 type input output The adapter also provides an RS 232 comport with optional handshaking signals on CTS and RTS for use with legacy serial equipment In the lab one additional mode allows connection of TTL level signals for product design and debug The adapter is powered by the host USB port which eliminate
20. for use of acapir on a DB25 type connector Signal_ Function DB 9Pin DB 25Pin Comment RSE a AREA px RECEIVE DATA 2 3 RS 232levelimput TX TRANSMIT DATA 3 2 RS 232leveloutput DTR_____ Data Term Ready 4 20 vtopoweradapter GND____ GROUND____ _ 5 7 signalground DSR____ DataSetReady 6 tied to DTR pin 4 CTS CleartoSend 8 5 RI Ringindicator _9 22 RS 422 connections to the ANC 6204 For a standard RS422 or multimedia interfacing this is the mode the ANC 6204 is shipped for A 9 pin male to 9 pin male cable wired pin to pin is used to connect to the multimedia device For other interfaces the user hand wires a 9 pin cable assembly from the RS 485 422 piece of equipment to the Antona adapter The only difference between the server and client tables below is the jumper positions of JP6 and JP7 within the adapter The electronics are exactly the same only the 2 transmit and 2 receive signal lines are exchanged on the RS 485 422 side of the adapter Antona Corporation 10 818 783 4299 DB9 Female RS 422 Signals for Server Multimedia Controller DB9 female FUNCTION IDENTIFICATION CONN J2 o 2 RC RS 485 422minussideimput Pp 3 o TX RS 485 422plussideoutput Y 4 GROUND groundforkS 485 422 o A 6 GROUND groundforkS 485 422 8 19 TX RS 485 422minus side output L 9 SHIELD Connectorshieldground___ DB9 Female RS 422 Signals for C
21. he JP12 LD LED indicators requires cutting the vertical trace between the 2 pads on the back side of the PCB to disable the LEDs Normally the LEDs are enabled and draw very little Current but some environments require no sources of extraneous light so disabling the indicators would be desirable Figure 1 also shows the jumper positions when the adapter is shipped Additional 2mm jumpers are on the adapter to enable JP5 JP10 and JP11 These three jumpers are in the keeper position over 1 of the 2 pins used to enable a feature The schematic on the last page of this manual gives another view of each jumper showing the settings on isolated block drawings of each jumper function referenced to the circuit When shipped the ANC 6204 is set for transmit JP1 and receive JP3 enabled always RTS is connected to CTS JP2 to enable the handshaking lines of RS 232 TTL output JP4 on the DB 9 female connector is disabled The terminating resister JP5 is disconnected and the output pins JP6 7 are set for server Sometimes referred to as master in older literature Both serial interface ports are receive enabled JP8 9 and 4 wire interfacing is connected JP10 11 Jumper 12 silk screened LD on the PCB is used to enable powering of the Tx and Rc LED indicators enabled when shipped Opening the Plastic Enclosure To open the enclosure hood use a small flat blade screwdriver and carefully pry the plastic latches
22. heck that you have set the jumpers correctly for your application Both jumpers must be installed for the adapter to work properly and it is possible to have one set incorrectly cause the adapter to be non operational Check the adapter jumper settings against the schematic As a baseline restore all jumper settings to the factory defaults shown on the schematic and do a loopback test Cable Termination Reflected signal produced by cabling that is not terminated properly will cause data transmission errors A terminated cable matched to the impedance of the cable wire produces the maximum signal transfer and dampens the ringing of a reflected signal Cable with nominal 120 ohm impedance will work the best low cost UTP CAT 5 works good If you are using the adapter to interface with one piece of equipment a short cable run under 150 feet in an electrically clean environment like an office then you probably do not need the cable to be terminated If you are using the ANC 6204 to interface with 2 or more RS 485 devices in an industrial environment with hundreds of feet of cable terminating both ends of the cable at the end points would be required The adapter has a jumper enabled 120 ohm resister JP5 near R on the PCB that takes care of the adapter end of the cable termination The user must connect a similar resister at the far end of the cable run An unterminated cable will not work generally with long cable runs and baud rates above 19
23. industrial or commercial applications where a failure of the Antona product does not precipitate other damages The designer is responsible for the determining the suitability and use of the product This warranty is in lieu of any other warranty expressed implied or statutory including without limitation any implied warranty or merchantability or fitness for a particular purpose No amendment of this warranty may be effected except in writing by an officer of the Antona Corporation All repair services shall be performed at the Antona Corporation plant in Los Angeles Ca THE PURCHASER MUST OBTAIN A RETURN AUTHORIZATION FROM THE ANTONA CORPORATION PRIOR TO RETURNING ANY PIECE OF EQUIPMENT Shipment to the Antona Corporation will be at the expense of the purchaser return shipment will be at the expense of the Antona Corporation for all warranty repairs Antona Corporation 1 818 783 4299 TABLE OF CONTENTS NA NN 3 OVER V TW AAEE AE TE E TA T AST ER AEE EEA ARE ERREA 3 MECHANICAL SPECIFICATIONS e ra a avers a aa a aa a aaa e E aa a eA Ea a Ne eves 3 ELECTRICAL SPECIFICATIONS 2 h 0o4ecsiaicndstseselouncevencstieselvobseSeardvenatodwcetondsdiesetetssnteeardousetovncetencedtevetetbsntcuarsierasetmcetondeddeseletbsetenr scatcvedetenteadeversten 3 ADAPTER JUMPER OPTIONG ssscssssssssssscsssscssssscsssssessssssscnssessessesessnssssseseesenssesesssesesenssssnssescessasessnssessaseessesasossssossnsscssesasossesosseseesees 4 Figure
24. its and 1 stop bit For many RS 485 multidrop industrial control applications the baud rate is much slower like 9600 no parity 8 data bits and 1 stop bit Here again if the program is not setup right the adapter will appear not to be working at all Serial Equipment Try to verify the operation of the target equipment independent of the Antona adapter by using another setup a different cable connected to another RS422 485 signal generating device would be the best Using a different computer with the Antona adapter would also be a good test Now What If none of the above seems to fix the problem but the loopback test works the adapter is working You now need to connect an oscilloscope up to examine and monitor the RS422 485 signals or the RS232 signals being generated by the adapter with the plastic cover removed running with your device and program Refer to the schematic Appendix D in this manual It is easy to put a scope probe onto the tops of the 4 jumpers JP6 7 and verify that RS422 485 signals are coming and going to the adapter Test the power to the adapter by attaching a probe to the lead of the 4 7uf capacitor near the 5v FET Look for excess noise on any of the lines that might be fouling up the transmissions If the loopback test does not work check the adapter on another computer Each adapter is tested prior to shipment with every combination of character transmitted and received at 38 4 Kbaud but like everything
25. l baudrate character length parity and stop bits to match your PC s application software RS 232 Serial Interfacing Pin signal definition is important the ANC 6204 schematic and the ANC 6204 RS 232 connections table shows the signals as defined coming from the adapter Tx from the adapter is connected to RECEIVE on the attached equipment and Rc is connected to the equipment TRANSMIT Any RS232 device that plugs into a PC comport will work with the adapters pinouts The two HS HandShake jumpers of JP2 are set for no hardware handshaking but older or specialized equipment may require enabling the RS232 signals CTS Clear To Send and RTS Ready To Sena signals for synchronization of transmit and receive Data Direction Jumpers When shipped the Antona adapter is set for a SERVER sometimes called MASTER or CONTROLLER interface Connector pin outs are shown in this manual for both SERVER and CLIENT mode so be sure you are looking at the correct table You may also want to open the adapter enclosure to verify the jumpers JP6 7 are set for the mode you desire All 4 jumpers should be installed they represent each of the 4 signals being transmitted and received The Schematic Appendix last page of this manual shows how and where these jumpers are located Data Control Jumpers There are two main jumpers JP1 and JP3 that control the operation of the signal switching on the ANC 6204 for transmit and receive enabling Double c
26. lient Receive from server DB9 female FUNCTION IDENTIFICATION CONN J2 pT TX RS 485 422minus side output o 3 RC RS 485 422plussideimput IE PES ES E 7 RS 485 422 plus side output RS 485 422 minus side input SHIELD Connector shield ground RS 485 Two and Four Wire Interfacing 2 wire RS 485 One of the key uses of a controlled transmit adapter like the ANC 6204 is for applications using multidrop 2 wire interfacing RS 485 type equipment A two wire interface with multiple peripherals uses a polled response half duplex software protocol where each device has a unique device code The designer should use twisted pair wire with an impedance of 100 to 120 ohms Plain low cost CAT 5 UTP Unshielded Twisted Pair wire works fine Change the JP1 jumper as detailed in the Adapter Jumper Options for AT Auto Transmit JP3 gives the user the option to echo the data being transmitted RO or disable receiving when transmitting AR The user must also set the JP10 11 jumpers TX to RC TX to RC to link the transmit lines to the receive lines The 2 conductor cable which connects to the outside world is then wired to the ANC 6204 adapter s TX DATA and to TX DATA Match TX to the DATA or D and TX to DATA or D of the RS 485 compatible peripheral Lastly the JP5 jumper may be needed to enable the 120 ohm terminating resistor across the data lines to dampen reflected noise Antona Corporation 11
27. monly used mode jumpers between the silk screened TO and RO Transmit On Receive On on the PCB as noted in fig 2 above 4 wire mode In applications where a 2 wire RS 485 type interface is required the adapter needs to turn off the transmit driver lines Tx and Tx to allow the reception of data by the adapter over the same 2 wires This also may be important to save current when there is no data being transmitted in battery operated computers or even in 4 wire RS 422 type interfaces Set jumper JP1 between the AT to enable Auto Transmit When using the auto transmit feature the adapter automatically enables the driver output only when data out is sensed The lower 2 pin position MUST be set and JP3 also pictured in figure 2 and described below should be set for the desired receive control See figure 1 above or the schematic for the location of JP1 and JP3 Photo 1 below shows a dual scope trace demonstrating how the AutoXmit feature works The upper trace is Tx on the adapter and the lower trace is the AT pin of jumper 1 Note the lower trace enables the transmit lines only when data is being sent Antona Corporation 5 818 783 4299 AA 5 00 Y ch2 5 00V M2 00ms A Chi f 2 10V Photo 1 Auto Transmit Operation Receive Enable JP3 The JP3 vertical 3 pin jumper can be set to enable receiving RS 485 422 data always as shipped when the 2mm shunt is on the lower and middle pin labeled RO Receive On JP3 can be set on
28. mpts to complete the driver installation The procedure for downloading the software and installation instructions is detailed in Appendix A After the ANC 6204 is installed and working with the driver software power down the PC and power down the remote equipment to be connected to the ANC 6204 Attach the cable required for the end application RS322 RS422 RS485 or TTL between the peripheral and the ANC 6204 adapter then re power the computer and the attached equipment A common Antona Corporation 9 818 783 4299 example would be connecting a male to male DB9 6 cable from the adapter to a Sony video tape deck that uses an RS422 SMPTE interface The adapter may be attached to a type A extension cable from the computer or USB hub to the Antona adapter The USB cable extension should not exceed 12 feet Adapter Connector Interfacing There are 3 distinct serial modes the ANC 6204 can be used in noise immune differential RS422 485 unipolar RS232 PC ComPort and TTL low voltage level interfacing for use in prototyping and test application The following pages detail the connector and pin connections for each type ANC 6204 RS 232 connections male DB 9 DCD____ Data Carrier Detect 1 Notcomected GROUND ground Data Set Ready 6 Tiedtopin4 imputtoadapter Ready to Send See jumper 2 output from adapter Clear to Send 8 Seejumper2 FRE Ring Indicator 9 Not connected DB9 to DB25 pin to pin chart
29. on one side of the enclosure and gently separate the sides slightly about 020 Antona Corporation 4 818 783 4299 Place a paper clip or coin between the separated side of the enclosure to keep it from re latching shut while you repeat the process on the two plastic latches on the other side of the hood The two sides of the hood should now come apart Leave the enclosure off the adapter while jumper changes are made and adapter is being tested in operation To reassemble the enclosure hood around the adapter electronics place the circuit board into the enclosure half that has the 2 holes for the LEDs with the LEDs aligned through them and the back of the enclosure with the larger arrowhead icon by the RS485 422 TTL designation toward the adapter end closest to the LEDs the female DB 9 connector end Transmit and Receive Control JP1 and JP3 4 WIRE MODE AS SHIPPEDX TO E CLASSIC RS 422 ELEVE N at Ll JPI SET JP10 gt JP11 DISABLED REC ALWAYS ON AR al RO ll UPS 2 WIRE MODES CLASSIC RS 485 TX ON REC OFF AT j P1 SET JP1 JP11 ENABLED WHEN DATA OUT R RO JP3 ECHOBACK DATA SENT TX ON WHEN DATA OUT REC ALWAYS ON AT le Figure 2 transmit receive control Transmit Enable JP1 For single adapter 4 wire setups where the ANC 6204 is controlling one piece of equipment JP1 is set in the position for the transmit data RS 422 driver lines are always on This is how the adapter is shipped because it is the most com
30. racter sent or received visible to the user The LED jumper JP12 or LD described in the jumper option section allows disabling the LEDs if desired after the installation process is complete The current savings is not important but may be desired on portable or battery powered installations Some locations restrict sources of illumination due to specific environmental or operational requirements The following JP12 enabled table will help in interpreting the LEDs Indication Meaning Tx LED pulsing on off Normal indication for transmit data This is the most useful indication of adapter operation Tx LED always on Check wiring jumper settings and the attached equipment for operation and connection Unplug the adapter and plug back in to reset Tx LED always off when transmitting Check that the USB serial port is powered hub powered etc Check the driver virtual comport and application software for correct settings and the serial port through the VCP software Rc LED pulsing on off Normal indication for receive data Rc LED always on Check that the Rc and Rc polarity of the attached equipment is correct and check attached device s Rc LED always off when receiving Check wiring jumpers settings and that the connected device s is transmitting to the adapter at the proper baud rate parity data bits etc Antona Corporation 19 818 783 4299
31. s the need for an external power supply There is a 3 foot USB cable included with the adapter to connect from a type A USB port to the OTG type B mini receptacle on the ANC 6204 adapter Mechanical Specifications Adapter case size 2 9 X 1 3 Connectors Male DB9 for PC RS 232 serial comport emulation Female DB9 for SMPTE RS485 422 and TTL interfacing Electrical Specifications Power requirements 50 ma for short cable non terminated applications 100 ma for long and or terminated cable applications Voltage 5v from USB port Antona Corporation 3 818 783 4299 RS 485 422 output drive short proof output non terminated operation to 150 feet terminated operation with external power supply to 4 000 feet RS232 output drive short proof output under worse case conditions 5v switching to exceed 3v EIA RS232 specification Adapter Jumper Options JP1 e o T JPS TOWN spa par ATlo o oo cm JP6l ollo JP10 oo AR lt JP2 Rol IPR ol YP 1d JP3 DFId djcm JP8 dd JP9 HS Figure 1 ANC 6204 jumper locations All references below to horizontal and vertical are in respect to figure 1 above The circuit board PCB is silk screened with letters or a single letter close to the 2mm jumper posts due to space limitations The silk screened letter s describe the function or setting Except for JP2 HS Handshake and JP9 CM Comport the jumpers effect the RS422 RS485 and TTL interface only Only t
32. signed by the software driver This process will vary according to the user application software but usually means clicking on a settings or preferences tab within the application software in Windows The user can set up a simple test using HyperTerminal on a Windows based system to check the adapter for operation 5 Bring up HyperTerminal or the equivalent MAC program for serial communication and set the connect using drop down menu to select the USB comport assignment COME in this example Set the baud rate parity etc click OK and then type on the keyboard The Tx LED on the ANC 6204 should blink as you type if the adapter and software are working correctly Both LEDs will blink if the adapter s JP3 jumper is set for RO and the JP10 11 jumpers have been set for 2 wire RS485 operation Antona Corporation 15 818 783 4299 Appendix B ANC 6204 Troubleshooting Guide RS232 and RS422 RS485 Serial Interfaces Here are the most common sources of interfacing problems and tests you can make to diagnose your interface Loopback Test You can verify that the Antona adapter is working by doing a simple loopback test Set JP10 11 for a 2 wire interface as described in the manual That will set TX to TX and RC to RC looping back the transmitted data as received data Put the signal control jumpers JP1 3 back to the as shipped position if they have been moved to insure that transmit and rec
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