RS232 Interface Module user manual
Contents
1. solortron metrology RS232 Interface Module user manual CE 1 0 Index Section Title 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 Appendix System Connection Product Description Operation 5 1 Command Order 5 2 RS232 Baud Rate RS232IM Specific Commands Code Examples 7 1 Quick BasiC 7 2 Low Level Specifications Return of Goods Solartron Offices Part No 502030 issue 7 1 2 0 Introduction This manual is provided as a supplement to the standard Network Card and Driver manual The Network Card and Driver manual is primarily intended for systems based around the Orbit Network Card Therefore sections 1 2 and 3 are not particularly relevant to a RS232IM system The remainder of the manual gives full information on Orbit Commands error codes etc Two variants of the standard product are available the only difference being the default RS232 Baud rate on switch on These variants are provided for users with PLCs that have limited RS232 Baud rate options For the standard RS232IM the default is 9600Baud For the 911301 variant the default is 57 6kBaud For the 911338 variant the default is 115 2kBaud Orbit Measurement System Software and Documentation CD Part No 510266 contains setup exe to install drivers for WIN98 ME 2000 NT XP and also contains Orbit_dos folder2. T CHR 0 From RS232IM nothing OrbitRst To RS232IM CHR 0 CHR 2 R CHR 0 From RS232IM nothing OrbitAcquire To RS232IM CHR 2 CHR 2 CHR 5 A CHR oaddr CHR rdgs dly 2 bytes From RS232IM CHRS status CHR 2 A CHR oaddr Total reply length 4 bytes OrbitClr To RS232IM CHR 2 CHR 2 CHR 2 C CHR oaddr From RS232IM CHRS status CHR 2 C CHR oaddr Total reply length 4 bytes OrbitDifference To RS232IM CHR 2 CHR 2 CHR 2 F CHR oaddr From RS232IM CHRS status CHR 2 F CHR oaddr Total reply length 4 bytes OrbitDirection To RS232IM CHR 2 CHR 2 CHR 2 U CHR oaddr From RS232IM CHRS status CHR 2 U CHR oaddr Total reply length 4 bytes OrbitPreset To RS232IM CHR 2 CHR 2 CHR 6 P CHR oaddr pstlong amp 4 bytes From RS232IM CHRS status CHR 2 P CHR oaddr Total reply length 4 bytes OrbitSetMode To RS232IM CHR 2 CHR 2 CHR 6 V CHR oaddr Mode 2 bytes M_Arg 2 bytes From RS232IM CHRS status CHR 2 V CHR oaddr Total reply length 4 bytes OrbitRead1 To RS232IM CHR 2 CHR 3 CHR 2 1 CHR oaddr From RS232IM CHRS status CHR 3 1 rd 2 bytes Total reply length 5 bytes 18 Part No 502030 issue 7 1 Appendix OrbitRead2 To RS232IM CHR 2 CHR 5 CHR 2 L CHR
3. Send e 0x02 Command type e 0x02 NumChars to receive e Ox0D NumChars to send e 0x53 S SetAddr command e 0x01 Address to set to e Ten character identity e 0x00 Reply e 0x00 Status Byte e 0x02 NumChars e S Acknowledge Byte e 0x00 Address previously set to If the identity is not found the ErrorStatus will be set to OxFF timeout and NumChars will be set to 0x00 No acknowledge byte or previous address will be returned Identify Send e 0x02 Command type 0x1E NumChars to receive e 0x02 NumChars to send e 0x49 T Identify command e 0x01 address to talk to Reply e 0x00 Status Byte e 0x1E NumChars e T Acknowledge Byte e 10 character identity e 12 character device type e 5 byte version e 2 byte 16 bit integer stroke Least Significant Byte sent first Part No 502030 Issue 7 1 13 7 0 Code Examples Getinfo Send e 0x02 Command type e 0x29 NumChars to receive 0x02 NumChars to transmit e 0x42 B Getinfo command e 0x01 address to talk to Reply e 0x00 Status Byte e 0x29 NumChars e B Acknowledge Byte e 4 character Module type e 2 byte 16 bit integer hardware type Least Significant Byte sent first e 2 byte 16 bit integer resolution Least Significant Byte sent first e 32 character Module Info Read1 Send e 0x02 Command type e 0x03 NumChars to receive 0x02 NumChars to
4. represents a string of bytes and CHR n represents a received transmitted byte of binary value n NOTE Replies from the RS232IM are sent Least Significant LS byte first OrbitSetaddr To RS232IM CHR 2 CHR 2 CHR 13 S CHR oaddr id CHR 0 From RS232IM CHR amp status CHR 2 S CHR prevoaddr Total reply length 4 bytes OrbitNotify To RS232IM CHR 2 CHR 11 CHR 2 N CHR 0 From RS232IM CHRS status CHR 11 N id 10 bytes if moved Total reply length 13 bytes Orbitldentify To RS232IM CHR 2 CHR 30 CHR 2 1 CHR oaddr From RS232IM CHR amp status CHR 30 l id 10 bytes devtype 12 bytes ver 5 bytes stroke 2 bytes Total reply length 32 bytes OrbitGetinfo To RS232IM CHR 2 CHR 41 CHR 2 B CHR oaddr From RS232IM CHR amp status CHR 41 B moduletype 4 bytes hwtype 2 bytes reso 2 bytes moduleinfo 32 bytes Total reply length 43 bytes OrbitGetstatus To RS232IM CHR 2 CHR 4 CHR 2 G CHR oaddr From RS232IM CHR amp status CHR 4 G CHR errcode status 2 bytes Total reply length 6 bytes OrbitStartdiff To RS232IM CHR 0 CHR 2 O CHR 0 From RS232IM nothing OrbitStopdiff To RS232IM CHR 0 CHR 2 H CHR 0 From RS232IM nothing Part No 502030 Issue 7 1 17 Appendix OrbitTrigger To RS232IM CHR 0 CHR 2
5. L NS i le el h 207r Ba N E O4 5mm E abs Ya 2 4 48 0mm 2 of or MOUNTING OPTION MOUNTING OPTION USING CAPTIVE NUTS USING PLASTIC FEET RS232C Connector 9 pin female D on flying lead The connector is designed to plug straight in to a 9 pin PC serial port The pin designations shown below refer to the meaning of that pin at the output of the PC A special adapter may be required if the RS232IM is being used with a non PC interface Port Settings Byte Format Binary 8 data bits No Parity Baud Rate 9600 19 2k 28 8k 38 4k 57 6k or 115 2k Handshaking Hardware CTS RTS or None Stop bit 1 Part No 502030 Issue 7 1 15 8 0 Specifications 1 No Connection E Ese 2 Rx from RS232IM 3 Tx to RS232I1M oe Q Q 4 DTR linked to pin 6 OO0OOOO 5 GND 402 3 4 5 6 DSR linked to pin 4 7 RTS to RS232IM 8 CTS from RS232IM 9 No Connection Power Source 5v DC derived from PSIM not supplied by PC RS232 comm port or Orbit network Environmental Operational temperature 32 to 140 F 0 to 60 C Storage temperature 4 to 140 F 20 to 60 C Protection Rating IP40 Approvals EMC Susceptibility EN 50082 1 EMC Emission EN 50081 2 Safety EN61010 1 16 Part No 502030 issue 7 1 Appendix Standard Orbit Commands The following list contains all of the Orbit commands available through an RS232IM RS232IM Strings required for each Orbit Command In the list below
6. The standard RS232IM defaults to 9600 Baud on start up It will keep this baud rate until it is changed or after switch on Thus if the baud rate has already been changed without a power cycle occurring the Baud rate may well be set to an unknown baud rate at the start of the user program Therefore it may be necessary to send the Change Baud command at all possible baud rates starting with the most probable and see if they respond correctly If a reply is received with no error then that baud rate is the one the RS232IM is currently set to The Orbit Baud Rate defaults to 187500 Baud this should always be used The 9600 Baud rate should not be used for any new installations It is only provided for backwards compatibility with an older product range and it will be obsoleted in the future 6 Part No 502030 issue 7 1 6 0 RS232IM Specific Commands There are two RS232 Interface Module configuration commands These are used to set the RS232 and Orbit Baud Rates and to put the module in Idle mode to allow another Module to act as the controller on the Orbit Network eg an Encoder Input Module These are as follows Setup interface RS232 and Orbit Command Type 6 String received by RS232IM on RS232 Rx 9 pin D skt pin 3 To RS232IM Cmd byte 10 OA Hex RS232 settings Orbit speed RS232IM command RS232 Baud rate Orbit Baud rate byte handshake String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2
7. for DOS users Note Cover picture shows RS232IM together with PSIM Power Supply Interface Module Part No 502030 Issue 7 1 3 3 0 System Connection The RS232 Interface Module is not powered from the PC RS232 comm port or the Orbit Bus It must be powered from a PSIM See below for configuration PC RS232 comm i port LE 90 240 V ac Standard Orbit Modules and T CON PSIM RS2321M TH DO NOT connect Orbit Network Li poh YIL plug socket side side Refer to the Orbit Network Measurement System for detailed information on Orbit Network elec trical requirements Part No 502030 issue 7 1 4 0 Product Description The RS232IM is designed to act as a bridge between any device with a full duplex RS232 serial port and the Orbit Network The RS232IM receives a command header string and an Orbit command string from the Master device It then re transmits the Orbit command string to the Orbit network 187 5 kBaud Note Due to bandwidth limitations on the RS232 comm port the RS232IM is not Orbit High Speed or Dynamic capable For these functions the Orbit PCI Network Card should be used The Orbit module processes the command and returns a reply if appropriate to the RS232IM which then adds a reply header and transmits both header and reply to the Master The production of the break character and the
8. transmit e 0x31 1 Read1 command e 0x01 address to talk to Reply e 0x00 Status Byte e 0x03 NumChars e 1 Acknowledge Byte e 2 byte 16 bit integer reading Least Significant Byte sent first Read2 Send Note 0x02 Command type Using Read 1 or Read 2 with a Digital Probe in 0x05 NumChars to receive Underrange or Overrange conditon will return 0x02 NumChars to transmit 0x21 for the Acknowledge Byte and the 0x4C L Read2 command following byte will be 0x12 for Underrange or 0x01 address to talk to 0x13 for Overrange Further bytes are to be ignored Reply e 0x00 Status Byte e 0x05 NumChars e L Acknowledge Byte e 4 byte 32 bit integer reading Least Significant Byte sent first 14 Part No 502030 issue 7 1 8 0 Specifications Mounting Information 0 157 4 0mm E 239 MIN BEND RADIUS 5 a 60 8mm Lf a eS wi AN TE z im H 5S o 2 g Lil Sg yp Er J I i WW Yn Z E a E 20 335 x 90 389 l Re E 28 5mm x 90 y ne p oer El E CQUNTERSINK 218 ee E i 11 eee 805 anit Gap do a ae T 2 913 0 020 j l l WASHER 74 0 0 5mm PE L oN L 3425 Max S5 N Ma SCREW 87 0mm Max T CON is permanently attached module does not separate T CON BASE PADS For more information on mounting refer to the Orbit Measurement System Manual r pe
9. From RS232IM Byte 1 Byte 2 Status byte Byte count always 0 RS232IM status Number of bytes in Orbit reply Notes 1 If the RS232 settings and Orbit speed codes are valid the RS232IM will be set to the new values after the status byte and byte count have been transmitted 2 The status byte and byte count are transmitted at the same Baud rate as the received co mand Setup Codes RS232 settings byte 2 in String received by RS232IM This byte is used to set the RS232 Baud rate and handshaking the Baud rate code selects the rate at which the RS232IM will operate after the command has been acknowledged Hardware handshaking CTS RTS can be turned on off by setting clearing the MS bit of the in RS232 Settings byte hence If handshaking is required RS232 Settings byte Baud rate code 128 If no handshaking is required RS232 Settings byte Baud rate code Part No 502030 Issue 7 1 7 6 0 RS232IM Specific Commands RS232 settings byte 2 in String received by RS232IM Baud rate codes 0 OORUN RS232_DefltBaud 9600 RS232IM is set to this rate and no handshaking at power on RS232_9600 RS232_ 19200 RS232_ 28800 RS232_ 38400 RS232_57600 RS232_ 115200 Orbit speed byte 3 in String received by RS232IM This byte is used to set the Orbit Baud rate Currently only 9600 Baud and 187 5k Baud are avail able the other codes are reserved for future expansion The 9600 Baud rate sh
10. handling of the Orbit message turn around are all performed by the RS232IM Master device Tx Rx RS232IM A A Orbit Module s PC PLC etc RS232 Orbit Digital Probe Rx Tx B B Linear Encoder etc RS485 Half Duplex The command and reply header strings contain information which is used by the RS232IM to con trol and report on the Orbit Network Part No 502030 Issue 7 1 5 5 0 Operation It is important to understand the order of commands required to configure the RS232 Interface Module The recommended command order is listed below 5 1 Command Order e Power on Note The standard RS232IM defaults to 9600 Baud on start up It will keep this baud rate until it is changed or after power on See section on changing the baud rate e Change baud rate if desired Don t forget to now change the Baud rate on the controlling PC or PLC from this point onwards e Reset e Notify if desired e Setaddr to set the module up at an address e Identify to return information about the module e Getinfo to return information about the module e Read1 or Read2 to read module See Command details section for further information on each command listed below 5 2 RS232 Baud Rate This is the most important command to understand If incorrectly applied the user will be unable to communicate with the RS232 Interface Module There are two Baud rates that can be configured 1 The RS232 Baud Rate 2 The Orbit Baud Rate
11. he baud rate of your serial port to the new rate from this point onwards Reset command Send e 0x00 Command type e 0x02 NumChars to send e 0x52 R e 0x00 There is no reply to this command Part No 502030 Issue 7 1 11 7 0 Code Examples Notify Command Send a Notify command if you wish to find the Orbit identity of a particular module If the Orbit iden tity is already known proceed to the Setaddr stage Keep on Notifying amp move tip until a reply is seen Send e 0x02 Command type e Ox0OB NumChars to receive e 0x02 NumChars to send e Ox4E N notify command e 0x00 Reply e 1 Byte Status Byte e 1 Byte NumChars e ReplyString Status Byte OxFF implies that no module has been notified time out No characters are returned so NumChars is set to 0 Nothing will be sent in ReplyString Send another Notify command in a loop until a module identity is successfully returned Status Byte 0x00 implies that a module has successfully been notified The Orbit identity and an acknowledge byte are sent back so NumChars is set to 11 ReplyString will contain N followed by the ten character Orbit identity for the module notified e 0x00 Status Byte e Ox0B NumChars to be received e N Acknowledge byte e 10 Char Identity 12 Part No 502030 issue 7 1 7 0 Code Examples SetAddr Command Once the module s identity is known set it up at an address from 1 to 31
12. oaddr From RS232IM CHR amp status CHR 5 L rdLong amp 4 bytes Total reply length 7 bytes OrbitReaddiff1 To RS232IM CHR 2 CHR 13 CHR 2 D CHR oaddr From RS232IM CHR amp status CHR 13 D min 2 bytes max 2 bytes sum 5 bytes num 3 bytes Total reply length 15 bytes OrbitReaddiff2 To RS232IM CHR 2 CHR 9 CHR 2 X CHR oaddr From RS232IM CHR amp status CHR 9 X minlong amp 4 bytes maxlong amp 4 bytes Total reply length 11 bytes OrbitReadia To RS232IM CHR 2 CHR 51 CHR 2 E CHR oaddr From RS232IM CHR amp status CHR 51 E 25 x 2 byte values 50 bytes Total reply length 53 bytes OrbitRefmark To RS232IM CHR 2 CHR 2 CHR 2 K CHR oaddr From RS232IM CHRS status CHR 2 K CHR oaddr Total reply length 4 bytes OrbitSetMode To RS232IM CHR 2 CHR 2 CHR 6 V CHR oaddr mode 2 bytes dly 2 bytes From RS232IM CHRS status CHR 2 V CHR oaddr Total reply length 4 bytes OrbitControl To RS232IM CHR 0 CHR 2 W CHR action From RS232IM nothing OrbitReadBuffer To RS232IM CHR 14 CHR 2 2 CHR oaddr From RS232IM CHR amp status CHR count 2 Readings variable 64 bytes max CHR Checksum Total reply length variable Note Checksum 2 s complement 8 bit Part No 502030 Issue 7 1 19 Appendi
13. ould not be used for any new installations It is only provided for backwards compatibility with an older product range and it will be obsoleted in the future WN oO RS485_DefltBaud currently 187 5k RS232IM is set to this rate at power on RS485_ 187500 RS485_ 9600 reserved for future expansion RS232 Setup interface status codes byte 1 in String transmitted from RS232IM 0 7 8 OK RS232 Settings byte and Orbit speed byte both valid bad RS232 Settings byte bad Orbit speed byte Set RS232IM Orbit interface to Idle Command Type 9 Used when another Module is to act as the controller on the Orbit Network String received by RS232IM on RS232 Rx 9 pin D skt pin 3 To RS2321M Cmd byte 16 10 Hex RS232IM command byte String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2 From RS2321M Status byte Byte count Part No 502030 issue 7 1 7 0 Code Examples The RS232IM command byte must always be the first byte sent to the RS232IM it determines what actions are to be performed it also dictates the meaning of the remaining bytes in the command header The information below describes each type of RS232IM command and the meaning of all the bytes in the command and reply headers 7 1 Quick Basic Examples Examples are written in Quick Basic 1 is an open Com port set to 9600 Baud 8 data bits no parity Command Type 6 Setup interface RS232 and Orbit String
14. received by RS232IM on RS232 Rx 9 pin D skt pin 3 To RS232IM Cmd byte 10 OA Hex RS232 settings Orbit speed RS232IM command byte RS232 Baud rate handshake Orbit Baud rate String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2 From RS232IM Byte 1 Byte 2 Status byte Byte count always 0 RS232IM status Number of bytes in Orbit reply Command Type 6 example Set RS232IM to RS232 9600 with handshaking and Orbit speed 187 5kB RS232Settings CHR 1 128 OrbitSpeed CHR 1 msg CHR 10 RS232Settings OrbitSpeed PRINT 1 msg Reply INPUT 2 1 Remember to change the baud rate of your serial port to the new rate from this point onwards Command Type 1 Send Orbit message no reply String received by RS232IM on RS232 Rx 9 pin D skt pin 3 To RS232IM Byte 3 257 max Cmd byte 0 Cmd Length Cmd String RS232IM command byte Length of Orbit Cmd string Orbit command string String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2 From RS232IM NO REPLY Part No 502030 Issue 7 1 9 7 0 Code Examples Command Type 1 Example Send OrbitRst command OrbitString R CHR 0 msg CHR 0 CHR LEN OrbitString OrbitString PRINT 1 msg Command Type 2 Send Orbit message wait for reply String received by RS232IM on RS232 Rx 9 pin D skt pin 3 String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2 From RS232IM Byte 1 Byte 2 By
15. te 3 257 max Status byte Byte count Reply string Command Type 2 Example Send OrbitSetaddr command to Orbit module M892780 36 set module to address 1 oaddr 1 id M892780 36 msg CHR 2 CHR 2 CHR 13 S CHR oaddr id CHR 0 PRINT 1 msg status INPUT 1 1 IF status chr 0 THEN count asc INPUT 1 1 Reply INPUT count 1 END IF Command Type 8 Send Orbit message wait for variable length reply String received by RS232IM on RS232 Rx 9 pin D skt pin 3 To RS232IM Byte 1 Byte 2 Byte 3 257 Cmd byte 14 Cmd Length Cmd String String transmitted from RS232IM on RS232 Tx 9 pin D skt pin 2 From RS232IM Byte 1 Byte 2 Byte 3 257 max Status byte Byte count Reply string 10 Part No 502030 issue 7 1 7 0 Code Examples Command Type 8 Example Send OrbitReadbuffer1 command to Orbit module oaddr 1 msg CHR 14 CHR 2 2 CHR oaddr PRINT 1 msg status INPUT 1 1 IF status chr 0 THEN count asc INPUT 1 1 Reply INPUT count 1 END IF 7 1 Low Level Examples Example of typical low level instructions follows Syntax Ox is used to signify a value in hex e g OxOA 10 decimal Change Baud Rate Example change from 9600 default to 115200 Baud Send e Ox0A Set up command e 0x06 115200 Baud no handshaking e 0x01 187 5k Orbit Speed Reply e 0x00 gt No Error Remember to change t
16. x RS232IM Error Codes For command types 2 6 and 8 the RS232IM returns a status byte byte 1 in String transmitted from RS232IM to indicate the RS232IM Orbit status status OK RS232Rx receive timeout RS232Rx command string too short bad RS232Settings byte bad Orbit speed byte 255 OFFh Orbit RS485 receive timeout module reply too short 254 OFEh Orbit RS485 receive parity error 253 OFDh bad checksum RS232IM calculated checksum not equal to received Orbit module checksum 0 NWO 20 Part No 502030 issue 7 1
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