Appendix 16When Using A Redundant System; Restrictions; Consideration - Mitsubishi Electric MELSEC iQ-R Series User Manual

Appendix 16
This section explains restrictions and consideration when using a high speed data logger module in a redundant system.

Restrictions

The following shows the restricted functions and specifications of when using a redundant system.
Mountable base units
A high speed data logger module must be mounted on an extension base unit
be mounted on the main base unit in a redundant system.
*1 Only the extension level 2 to 7 are available.
Access target CPUs
There are restrictions on accessible routes. For details, refer to the following:
MELSEC iQ-R High Speed Data Logger Module User's Manual (Startup)
Dedicated instructions
Dedicated instructions for a high speed data logger module cannot be used.
If a dedicated instruction is used, "Operation error (redundant function)" occurs in the process CPU (redundant mode).

Consideration

The following shows the consideration when using a redundant system.
Resetting a CPU module
Reset CPU modules of both systems for a function that requires resetting the CPU modules.
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Appendix 16 When Using a Redundant System
When Using a Redundant System
*1
or a redundant extension base unit. It cannot