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MELSEC-Q
6 PRE-OPERATIONAL PROCEDURES AND SETTING
(1) Indications of indicator LEDs 1
QJ71MT91
ERR.
COM.ERR.
RD
SD
OPEN
INIT.
RUN
100M
LED Name
Indication
ON
OFF
RUN Operation
status
Normal
Error
INIT. Initial
processing
status
Normal completion of basic
parameter setting
Basic parameter setting in
progress or nonexistent
OPEN
TCP connection open
status
Presence of open TCP
connection
Absence of open TCP
connection
SD
Send status
Data send in progress
Data not yet sent
ERR.
Setting error status
Error
Normal setting
COM.ERR.
Communication error
status
Communication error
occurrence 2
Normal communication in
progress
100M
Transmission speed
100Mbps
10Mbps or not connected
RD
Receive status
Data receive in progress
Data not yet received
1: For troubleshooting, refer to Section 11.1.
2: When the COM. ERR. LED has turned off, refer to Section 11.4.