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6
PRE-OPERATIONAL PROCEDURES AND SETTING
LED Name
COM.ERR.
6 - 5
(1) Indications of indicator LEDs
QJ71MT91
RUN
ERR.
INIT.
COM.ERR.
OPEN
100M
SD
RD
Indication
RUN
Operation status
INIT.
Initial processing status
TCP connection open
OPEN
status
SD
Send status
ERR.
Setting error status
Communication error
status
100M
Transmission speed
RD
Receive status
1: For troubleshooting, refer to Section 11.1.
2: When the COM. ERR. LED has turned off, refer to Section 11.4.
1
ON
Normal
Normal completion of basic
parameter setting
Presence of open TCP
connection
Data send in progress
Error
Communication error
occurrence
2
100Mbps
Data receive in progress
MELSEC-Q
OFF
Error
Basic parameter setting in
progress or nonexistent
Absence of open TCP
connection
Data not yet sent
Normal setting
Normal communication in
progress
10Mbps or not connected
Data not yet received
6 - 5
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