Omron TJ2-MC64 - PROGRAMMING Programming Manual page 222

Communication protocols
Examples
In these examples we assume this set-up:
• A Trajexia system with a TJ2-MC64.
• A slave PC, with node address 13.
• A connection from the serial port of the TJ2-MC64 to the PC. The serial
port uses RS422 communication.
/i
Example Reading data from the PC using HLM_READ.
BASIC code ' Set up Host Link master for port 2
SETCOM(9600,7,2,2,2,6)
' Source address: CIO/IR 002
' Amount of data: 2 words
' Destination address: VR(0)
HLM_READ(2,13,PLC_IR,2,2,MC_VR,0)
Host Link • From Host Link master to Host Link slave:
communication @13RR0002000242*
• From Host Link slave to Host Link master:
@13RR000101010241*
Result • VR address = 0: value = 257.0000
• VR address = 1: value = 258.0000
/i
Example Writing data to the PC using HLM_WRITE.
BASIC code ' Source address: TABLE(18)
' Amount of data: 2 words
' Destination address: LR 014
TABLE(18,$0701,$0702)
HLM_WRITE(2,13,PLC_LR,14,2,MC_TABLE,18)
Host Link • From Host Link master to Host Link slave:
communication @13WL0014070107025F*
• From Host Link slave to Host Link master:
@13WL0059*
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Result • LR address = 0: value = 701 (hex)
• LR address = 1: value = 702 (hex)
/i
Example Send TS (test) command to PC using HLM_COMMAND.
BASIC code HLM_COMMAND(HLM_TEST,2,13)
Host Link • From Host Link master to Host Link slave:
communication @13TSMCW151 TEST STRING2A*
• From Host Link slave to Host Link master:
@13TSMCW151 TEST STRING2A*
Result HLM_STATUS PORT(2) = 0, which implies correct communication.
/i
Example Set PC in MON mode using HLM_COMMAND.
BASIC code HLM_COMMAND(HLM_STWR,2,13,2)
Host Link • From Host Link master to Host Link slave:
communication @13SC0250*
• From Host Link slave to Host Link master:
@13SC0052*
Result The PC runs in MON mode. Note that this is necessary for writing data
to the PC using HLM_WRITE.
/i
Example Reading PC model code using HLM_COMMAND (timeout).
BASIC code HLM_TIMEOUT=500
' Destination address: VR(100)
HLM_COMMAND(HLM_MREAD,2,13,MC_VR,100)
Host Link • From Host Link master to Host Link slave:
communication @13MM42*
• From Host Link slave to Host Link master:
no response
Result Because the master has not received a response from the PC,
HLM_STATUS PORT(2) has value 256 (bit 8 is set) after 500 servo
cycles.
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