410
COM
(1) The COM instruction is used to perform I/O refresh at any timing during execution of a sequence program.
(2) The following processing can be performed with the COM instruction.
*1:
Products with the first 5 digits of the serial No. "12012" or higher are applicable.
*2:
Products with the first 5 digits of the serial No. "13012" or higher are applicable.
Remark
The following processing is also performed during service processing.
• Monitor processing of other station
• Read of another intelligent function module buffer memory by the serial communication module
(3) All the processing items except I/O refresh are performed when SM775 is turned OFF.
(4) Selecting a processing item
(a) Select a processing item in SD778 and turn ON SM775.
The following table shows processing that can be specified in SD778 when SM775 is turned ON.
Processing item
QCPU
LCPU
I/O refresh
CC-Link refresh
CC-Link IE Controller Network refresh
CC-Link IE Field Network refresh
*1
*2
MELSECNET/H refresh
Auto refresh of intelligent function modules
Auto refresh using QCPU standard area of multiple CPU system
Reading input/output data of all modules other than the multiple CPU system group
Auto refresh using the multiple CPU high speed transmission area of multiple CPU system
Communication with display unit
Service processing (communication with programming tool, GOT, or other external devices)
Processing item
QCPU
LCPU
When SM775 is
OFF
When SM775 is
ON
When SM775 is
OFF
When SM775 is
ON
I/O refresh
Not executed
Whether to be
executed or not
can be selected.
Not executed
Whether to be
executed or not
can be selected.
CC-Link refresh
Executed
Executed
CC-Link IE Controller Network refresh
-
-
CC-Link IE Field Network refresh
Executed
Whether to be
executed or not
can be selected.
MELSECNET/H refresh
-
-
Auto refresh of intelligent function modules
Executed
Whether to be
executed or not
can be selected.
Auto refresh using QCPU standard area of multiple CPU
system
-
-
Reading input/output data of all modules other than the
multiple CPU system group
-
-
Auto refresh using the multiple CPU high speed
transmission area of multiple CPU system
-
-
Communication with display unit
-
-
Executed
Whether to be
executed or not
can be selected.
Service processing (communication with programming
tool, GOT, or other external devices)
Executed
Whether to be
executed or not
can be selected.