Checking The Simple Cpu Communication Status; Checking With The Buffer Memory - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Checking the simple CPU communication status

The simple CPU communication status can be checked with the buffer memory or diagnostic functions.

Checking with the buffer memory

The simple CPU communication status can be checked with the storage status of the corresponding setting number in the
following CPU buffer memory areas.
Item
Execution status flag
Ready
Simple CPU communication 0H: Unset
status
1H: Preparing
3H: Communicating
4H: Communication stop
5H: Retry being executed
6H: Monitoring at error
AH: Communications
impossible
Simple CPU communication error code
Execution interval (current value)
For details on the values to be stored in the CPU buffer memory, refer to the following.
Page 345 CPU module (built-in Ethernet port part)
■Communication stop  restart request
When the simple CPU communication status of the corresponding setting number in the CPU buffer memory is either of the
following, communications can be stopped by turning off and on the stop request of the corresponding setting number. (If the
status is other than the following, the stop request is invalid.)
• 3H: Communicating
• 5H: Retry being executed
• 6H: Monitoring at error
When the stop request is turned off and on, the communications will stop at the timing of sending data in the
next execution interval.
Therefore, if the communication destination does not respond with the stop request accepted, the
communications will stop after the communication time-out period has passed. When the retry is being
executed, the communications will stop after the communication time-out period has passed without
depending on the retry count.
When the simple CPU communication status of the corresponding setting number in the CPU buffer memory is "4H:
Communication stop", communications can be restarted by turning off and on the CPU buffer memory of the corresponding
setting number. (If the status is other than "4H: Communication stop", the restart request is invalid.)
Address
1102 to 1105
1106 to 1109
1130 to 1193
1194 to 1257
1258 to 1321
1.14 Simple CPU Communication Function (CPU Module (Built-in Ethernet Port Part))
Remarks
1102.0: Setting No. 1 to 1105.F: Setting No. 64
1106.0: Setting No. 1 to 1109.F: Setting No. 64
1130: Setting No. 1 to 1193: Setting No. 64
1194: Setting No. 1 to 1257: Setting No. 64
1258: Setting No. 1 to 1321: Setting No. 64
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