Chapter 8. Communication Functions
8-7
8.1.4 Command list
Command
Main command Command type
Code ASCII code Code
ASCII code
Description
Individual
r(R)
H72
(H52)
SS 5353
Reads data from device of Bit, Byte, Word type.
Reading
device
Continuous r(R)
H72
(H52)
SB 5342
Reads device Word in block unit.
(Continuous reading Bit is unavailable)
Individual
w(W)
H77
(H57)
SS 5353
Writes data to device of Bit, Byte and Word type.
Writing
device
Continuous w(W)
H77
(H57)
SB 5342
Writes data to Byte and Word type in block unit.
(Continuous reading Bit is unavailable)
CPU
Status reading
r(R)
H73
(H53)
ST 5354
Reads flag list like PLC operation status and error information.
Command
Main command Register No.
Item
Code ASCII code Register no.
ASCII code
Description
Monitoring
variable register
x(X)
H78
(H58)
H00~H09 3030 ~ 3039
Register device to monitor.
Execution of
monitoring
y(Y)
H79
(H59)
H00~H09 3030 ~ 3039
Execute registered device to monitor.
- GM7U main unit identifies capitals or small letters for main commands, but not for the others.
REMARK
Classification
Item
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