Omron TJ2-MC64 - PROGRAMMING Programming Manual page 223

Communication protocols
4.3.2 Host Link slave
If the TJ2-MC64 is the Host Link slave, a Host Link master (for example, a
programmable terminal) can read data from the TJ2-MC64 and write data to
it. The mapping between the slave and the master is:
/i
TJ2-MC64 memory Host Link mapping
VR CIO
TABLE DM
You can use these BASIC commands:
/i
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 TJ2-MC64 model code for the Host Link
Slave protocol.
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.
/i
Type Header code
I/O memory read- RR
ing
RD
PROGRAMMING MANUAL
Address range
0 to 1023
0 to 63999
Name Function
CIO AREA Reads the specified number of
READ words from VR memory begin-
ning with the designated word.
DM AREA Reads the specified number of
READ words from TABLE memory
beginning with the designated
word.
Type Header code
I/O memory WR
writing
WD
Testing TS
PC model code MM
reading
I/O memory area QQMR
registration and
reading
QQIR
Host Link XZ
communications
processing
**
IC
End codes
These are the response end codes that are returned in the response frame:
/i
End code Description Probable cause
0 Normal No problem exists.
completion
Name Function
CIO AREA Writes the specified data in word
WRITE units to VR memory beginning
with the designated word.
DM AREA Writes the specified data in word
WRITE units to TABLE memory begin-
ning with the designated word.
TEST Returns, unaltered, a single block
that was sent from the master.
PC MODEL Reads the model code of the
READ TJ2-MC64 as specified by the
HLS_MODEL parameter.
REGISTER I/O Registers the I/O TABLE with the
MEMORY contents of the actual I/O configu-
ration
READ I/O Reads the registered I/O memory
MEMORY words/bits all at once.
ABORT Aborts the operation that is per-
(command only) formed by a Host Link command,
and returns to the initial status.
INITIALIZE Initializes the transfer control pro-
(command only) cedures for all Host Link units.
Undefined com- This is the response when the
mand (response command header code is invalid.
only)
Solution
N/A
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