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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