Mitsubishi Electric MELSEC-L Series - Troubleshooting on the Data Logging Status

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13.2.4 Troubleshooting on the data logging status
The following are examples of problems on the data logging status and corrective actions.
Symptom Cause Action
During execution of the data logging
function, when monitoring the
logging status is attempted through
USB or Ethernet connection, the
communication is disconnected and
the following error is displayed.
• Communication timeout "ES:
01808505"
• Cannot communicate with the
PLC. "ES: 0180840B" (The error
code changes depending on the
timing.)
The communication is performed
when the load applied to the CPU
module is high.
Starting multiple data loggings will temporarily increase the load on the service
processing. This may slow down the communication response, causing a timeout
error. By modifying the service processing setting in PLC Parameter, occurrence
of a timeout error can be avoided. For the service processing setting, refer to the
following.
MELSEC-L CPU Module User's Manual (Function Explanation, Program
Fundamentals)
Symptom Cause Action
The data logging is in the stop
status.
Start operation has not been
performed from the configuration
tool.
Perform the start operation from the configuration tool.
With an error due to a data logging
registration failure detected, the
CPU module was powered off and
then on or was reset.
Perform the start operation from the configuration tool.If a data logging error has
occurred after the start operation, modify the configuration according to the error
description.