Alarm Log Acquisition - Mitsubishi Electric MELSEC iQ-R Series User Manual

Alarm manual processing
This processing stores alarm information in 'IO device alarm indication area' (Un\G17145 to Un\G17152) when the RJ71PN92
has received an alarm from each IO device.
The RJ71PN92 acquires alarm information of the IO device and returns the alarm ACK to the IO device by using the alarm
request and alarm ACK of the service interface functions.
The following describes the operation of the alarm manual processing.
Ô
Un\G17145 to Un\G17152
OFF to ON
Un\G17145 to Un\G17152
ON to OFF
 Each IO device sends an alarm to the RJ71PN92.
 'IO device alarm indication area' (Un\G17145 to Un\G17152) turns on.
 Check that 'IO device alarm indication area' (Un\G17145 to Un\G17152) turns on in the program.
 Execute the alarm request of the service interface function in the program.
 Read the response to the alarm request of the service interface function that has been executed at step  in the program.
 Execute the alarm ACK of the service interface function in the program.
 The RJ71PN92 sends the alarm ACK to the IO device.
 'IO device alarm indication area' (Un\G17145 to Un\G17152) turns off.
 Read the response to the alarm ACK of the service interface function that has been executed at step  in the program.
For details on the alarm request and alarm ACK of the service interface function, refer to the following.
Page 38 Alarm request (ServiceID: 0006H)
Page 41 Alarm ACK (ServiceID: 0007H)
When the RJ71PN92 has received both high-priority alarms and low-priority alarms from IO devices and the
alarm request of the service interface function is executed, the high-priority alarms will respond.

Alarm log acquisition

When an alarm has occurred in the IO device, the RJ71PN92 stores the alarm information of the IO device in the alarm log.
The alarm log can store up to seven alarms.
Use the alarm log acquisition of the service interface function to check the alarm log details.
For details, refer to the following.
Page 46 Alarm log acquisition (ServiceID: 0009H)
When the alarm log has stored seven alarms and a new alarm occurs, the alarms will be deleted in order from
the oldest one.
1 FUNCTIONS
50
1.4 Alarm Acquisition Function
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