Filter
Top Products
4 - 2 4 - 2
MELSEC-Q
4 SETTING AND PROCEDURE BEFORE OPERATION
4.2 Part Names and Settings
4.2.1 QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G, QJ71LP21GE, QJ71BR11
(Remote master station)
(1) QJ71LP21, QJ71LP21-25, QJ71LP21S-25, QJ71LP21G,
QJ71LP21GE
(a) LED indications
No. Name LED status
Description
1 RUN ON (green)
Normal operation
OFF
Watchdog timer error (hardware failure)
2
MNG
1
ON (green)
Operating as a remote master station
OFF
Not operating as a remote master station
3 T.PASS ON (green)
In the baton pass status (The module is connected to the network.)
Flashing
(green)
Being tested (When the LED flashes 20 times or more (approx. 10 seconds), it means the end of
the test.)
OFF
Not in the baton pass status (The host station has been disconnected from the network.)
4 D.LINK ON (green)
Data link being performed (Cyclic transmission is being performed.)
OFF Data link not being performed (Parameters have not been received, an error has occurred in the
CPU module of host station, a data link stop instruction has been issued, or others.)
5 SD ON (green)
Data being sent
OFF
Data not being sent
6 RD ON (green)
Data being received
OFF
Data not being received
1: The LED of the sub-master operating station in a multiplexed remote I/O network is off.
4