Slmp Communications - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

37.17

SLMP Communications

This section describes the precautions on communications using the SLMP.
System switching
There are the following notes when the system IP address matching function is not used.
■Re-setting of the connection destination
When the relay CPU module is in the communication-disabled state (power-off, reset, or tracking cable disconnection) at
system switching, the connection destination needs to be set again for communications using the SLMP.
■Re-execution of the write command
When "Control System" or "Standby System" has been selected in the transfer setup and the systems are switched, a target
system mismatch is detected by a command issued during the system switching, and a communication error occurs. If a
communication error occurs while a data write command is being issued, the data write command needs to be issued for the
new control system.
Remote operation
If a remote operation command is executed, the CPU modules enter different operating statuses and thus systems cannot be
switched.
If the safety operation mode is SAFETY MODE, the safety global devices, safety global labels, safety local labels, and
standard/safety shared labels are not cleared even when the clear mode is set to perform the clear processing using remote
RUN.
Communicating with other systems
For SLMP communications via the built-in Ethernet port of the CPU module, when communications are performed to the other
system that cannot respond (power-off, reset, or tracking cable disconnection), a timeout error may occur.
External device
37 FUNCTIONS
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37.17 SLMP Communications
Own system The other system