12
TROUBLESHOOTING
12.2 Troubleshooting
12.2.30 When an error has occurred during MC protocol communication
12 - 51
9
EMC AND LOW
VOLTAGE
DIRECTIVES
10
LOADING AND
INSTALLATION
11
MAINTENANCE AND
INSPECTION
12
TROUBLESHOOTING APPENDICES INDEX
Was the error resolved?
Completed
(From previous page)
YES
YES
YES
YES
NO
NO
NO
NO
Correct the command format referring to the following manual.
MELSEC Communication Protocol Reference Manual
Are the data
specified for command format,
such as command type, device or
address correct?
Were requests
from multiple devices
simultaneously sent to the MC protocol
port specified in Open
settings?
Was the error resolved?
Perform the following.
Disable simultaneous request
transmissions from multiple devices.
Set a different MC protocol port for
each target.
When Ethernet communication with the target device is not available
Section 12.2.27
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