Mitsubishi MELSEC-F User Manual page 63

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
LED name
RUN Normal operation display
INIT. Initial processing status display
100 M Transmission speed display
SD Data sending display
RD Data receiving status display
ERR. Setting abnormal display
COM.ERR. Communication abnormal display
POWER Module power status
TCP/IP, UDP status of the
C1 to C8
connections
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(1) LED display contents
Display description
Normal
(when FROM/TO instruction can
be executed from PLC side)
Normal completion
100Mbps
Data being sent
Data being received
Abnormal
Communication abnormal
occurrence
Power is on
TCP/IP : Connection Established
UDP
1 Refer to Section 11.1.1 for causes of error displays and the corresponding
corrective actions.
2 The [ERR.] LED turns on in the following cases:
• When the parameter written is incorrect.
• When the checksum of the parameter written is not identical.
• When an error has occurred in the Ethernet module and operation is
disabled due to the error.
3 Refer to Section 11.1.1 for when "COM.ERR." LED is on.
1)
(
When the LED is on
Abnormal
(when WDT is in operation)
Not processed
(when execution failed initial
processing)
10Mbps/When not connected
Data not being sent
Data not being received
2
Normal setting
Normal communication in progress
3
Power is off
TCP/IP : Connection not Established
: Open UDP
MELSEC-F
When the LED is off
: Closed
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