Mitsubishi Electric MELSEC iQ-R User Manual page 198

Log
Display communication logs and errors related to BACnet communication.
Displaying communication logs of BACnet
This function displays data that a BACnet module has been sent/received.
The maximum number of communication logs can be set in [Settings]  [Basic Information]  [BACnet Detail Setting] button
 "System"  "MaxComLogCount". (Page 281 System)
If the number of logs exceeds the maximum number of logs, the logs will be deleted in order from the oldest one, and a new
log is saved.
Operating procedure
1.
Select [Log]  [BACnet Communication] to display the list of logs.
2.
Click a [Log-n] button to display the details of the log.
Displaying BACnet communication errors
This function displays errors related to BACnet communication.
Up to 100 errors can be displayed.
If the number of errors exceeds 100, the errors will be deleted in order from the oldest one, and a new error is saved.
Operating procedure
1.
Select [Log]  [Message].
1 FUNCTIONS
196
1.12 Configuration Function