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How to use MEXE02
RS-485 communication monitor
Received data via RS-485 communication can be checked, and also communication error history can be monitored. The
communication error history can be checked up to 10 items in order of the latest to oldest. All packets are monitored by
the RS-485 communication monitor at the factory setting, but the target to be monitored can be restricted by changing
the "RS-485 Receive packet monitor" parameter to "Only own address."
Area Item Description
①
Packet area
RS-485 Receive packet
monitor
Monitors the target to perform the RS-485 communication monitor.
The target to be monitored can be changed with the parameter setting.
Reception frame
Monitors the number of frames that the driver recognized to receive.
The method to count the number of frames varies according to the target to be
monitored.
The target to be monitored can be changed with the parameter setting.
Communication packet Monitors communication data. (Up to 64 bytes)
②
Counter area
Reception byte Monitors the number of bytes received via RS-485 communication.
Transmission byte Monitors the number of bytes transmitted via RS-485 communication.
Register write abnormal
Monitors the number of times that the received data was outside the setting
range or the command was unable to execute.
Normal reception frame (All) Monitors the number of normal frames that the driver recognized to receive.
Normal reception frame
(Only own address)
Monitors the number of normal frames that the driver recognized to receive to
own address.
Abnormal reception frame
(All)
Monitors the number of frames that the driver recognized to receive and
judged to be abnormal.
Transmission frame Monitors the number of frames that the driver transmitted.
③
Communication
error area
COM Error Condition Monitors the present communication error status.
Communication Error
History
Monitors error codes and messages of communication errors occurred in the
past, or causes and remedial actions of communication errors.
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