Mitsubishi Electric FX3U-ENET User Manual page 62

4 SETTINGS AND PROCEDURES PRIOR TO OPERATION
LED name
RUN Normal operation display
INIT. Initial processing status display
100M 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
*1 Refer to Subsection 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 Subsection 11.1.1 for the status when the [COM.ERR.] LED is on.
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(1) LED display contents
Display description
(*1)
When the LED is on
Normal
(when FROM/TO instruction can
be executed from PLC side)
Normal completion
100Mbps
Data being sent
Data being received
*2
Abnormal
Communication abnormal
*3
occurrence
Power is on
TCP/IP : Connection Established
UDP : Open
MELSEC-F
When the LED is off
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
Normal setting
Normal communication in progress
Power is off
TCP/IP : Connection not Established
UDP : Closed
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