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Precautions when Using the FP2 CPU Unit <2>
Of the commands sent from a host computer or display panel, if the monitor commands (the MC, MD,
and MG codes) are used, they cannot be read accurately if two or more devices within the same group
are connected.
Group A ….. CPU unit tool port
Group B ….. CPU unit COM. port
Group C ….. COM. 1 port group of Multi Communication Unit (MCU)
Group D ….. COM. 2 port group of Multi Communication Unit (MCU)
A similar restriction also applies if access is being made from another station connected with the link
unit.
Note:
If a monitor command is used for a port in the same group, registered data will be rewritten in sequential
order starting from the most recent data, and different data will end up being monitored.
Key Point:
Monitoring commands are commands used to implement monitoring after the contact or data to be
monitored has been registered on the PLC side.
The above restriction does not apply if the FP2SH CPU unit is being used.
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