61
Serial Communications Section 4-1
Refer to SECTION 6 BASIC Motion Control Programming Language for fur-
ther details on the commands.
Host Link Master
Commands
The following Host Link commands are supported for Host Link Master. A full
description of the Host Link protocol can be found in SYSMAC CS/CJ Series
Communications Commands Reference Manual (W342).
The Host Link Master protocol supports the commands only in single frame
and can be used with the BASIC commands as shown in the next table. The
table also shows for which operating mode of a CPU Unit (Slave) the com-
mand is valid.
Type Header
Code
Name Function
I/O memory reading RR CIO AREA READ Reads the specified number of words beginning with
the designated CIO/IR word.
RL LR AREA READ Reads the specified number of words beginning with
the designated LR word.
RH HR AREA READ Reads the specified number of words beginning with
the designated HR word.
RD DM AREA READ Reads the specified number of words beginning with
the designated DM word.
RJ AR AREA READ Reads the specified number of words beginning with
the designated AR word.
RE EM AREA READ Reads the specified number of words beginning with
the designated EM word.
I/O memory writing WR CIO AREA WRITE Writes the specified data in word units beginning with
the designated CIO/IR word.
WL LR AREA WRITE Writes the specified data in word units beginning with
the designated LR word.
WH HR AREA WRITE Writes the specified data in word units beginning with
the designated HR word.
WD DM AREA WRITE Writes the specified data in word units beginning with
the designated DM word.
WJ AR AREA WRITE Writes the specified data in word units beginning with
the designated AR word.
WE EM AREA WRITE Writes the specified data in word units beginning with
the designated EM word.
CPU Unit status SC STATUS WRITE Changes the CPU Unit’s operating mode.
Testing 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 CPU Unit
Host Link communi-
cations processing
XZ ABORT (command only) Aborts the operation being performed by a Host Link
command, and returns to the initial status.
** INITIALIZE (command only) Initializes the transfer control procedures for all Host
Link Units.
IC Undefined command
(response only)
This is the response when the command header code
is invalid.
Header
Code
Name BASIC Command
required
CPU Unit Operating Mode
RUN MON PRG
RR CIO AREA READ HLM_READ Valid Valid Valid
RL LR AREA READ HLM_READ Valid Valid Valid
RH HR AREA READ HLM_READ Valid Valid Valid
RD DM AREA READ HLM_READ Valid Valid Valid
RJ AR AREA READ HLM_READ Valid Valid Valid
RE EM AREA READ HLM_READ Valid Valid Valid
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