Communication protocols
PROGRAMMING MANUAL 217
Revision 1.0
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
You can use these BASIC commands:
/i
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
End codes
These are the response end codes that are returned in the response frame:
/i
TJ2-MC64 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 TJ2-MC64 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.
I/O memory
writing
WR CIO AREA
WRITE
Writes the specified data in word
units to VR memory beginning
with the designated word.
WD DM AREA
WRITE
Writes the specified data in word
units to TABLE memory begin-
ning with the designated word.
Tes ti ng TS TEST Returns, unaltered, a single block
that was sent from the master.
PC model code
reading
MM PC MODEL
READ
Reads the model code of the
TJ2-MC64 as specified by the
HLS_MODEL parameter.
I/O memory area
registration and
reading
QQMR REGISTER I/O
MEMORY
Registers the I/O TABLE with the
contents of the actual I/O configu-
ration
QQIR READ I/O
MEMORY
Reads the registered I/O memory
words/bits all at once.
Host Link
communications
processing
XZ ABORT
(command only)
Aborts the operation that is per-
formed by a Host Link command,
and returns to the initial status.
** INITIALIZE
(command only)
Initializes the transfer control pro-
cedures for all Host Link units.
IC Undefined com-
mand (response
only)
This is the response when the
command header code is invalid.
End code Description Probable cause Solution
0Normal
completion
No problem exists. N/A
Type Header code Name Function