Omron TJ1-MC04 - PROGRAMMING 1 - 4.3.2 Host Link Slave

Communication protocols
PROGRAMMING MANUAL 163
Revision 3.0
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4.3.2 Host Link slave
If the TJ1-MC__ is the Host Link slave, a Host Link master (for example, a
programmable terminal) can read data from the TJ1-MC__ and write data to
it. The mapping between the slave and the master is:
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You can use these BASIC commands:
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Commands
The commands supported for the Host Link Slave protocol are given in the
table below. The protocol supports single frame transfer and multiple frame
transfer.
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Example Send TS (test) command to PC using HLM_COMMAND.
BASIC code HLM_COMMAND(HLM_TEST,2,13)
Host Link
communication
• From Host Link master to Host Link slave:
@13TSMCW151 TEST STRING2A*
• From Host Link slave to Host Link master:
@13TSMCW151 TEST STRING2A*
Result HLM_STATUS PORT(2) = 0, which implies correct communication.
Example Set PC in MON mode using HLM_COMMAND.
BASIC code HLM_COMMAND(HLM_STWR,2,13,2)
Host Link
communication
• From Host Link master to Host Link slave:
@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.
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
communication
• From Host Link master to Host Link slave:
@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.
TJ1-MC__ memory Host Link mapping Address range
VR CIO 0 to 1023
TABLE DM 0 to 63999
BASIC command Description
SETCOM SETCOM configures the serial communication port, and it enables
the Host Link protocols.
HLS_NODE HLS_NODE defines the slave unit number for the Host Link Slave
protocol.
HLS_MODEL HLS_MODEL defines the TJ1-MC__ model code for the Host Link
Slave protocol.
Type Header code Name Function
I/O memory read-
ing
RR CIO AREA
READ
Reads the specified number of
words from VR memory begin-
ning with the designated word.
RD DM AREA
READ
Reads the specified number of
words from TABLE memory
beginning with the designated
word.
I52E-EN-03.book Seite 163 Freitag, 29. Juni 2007 11:55 11