Mitsubishi Electric MELSEC Q Series Reference Manual page 174

(3) Executing the station-to-station test
Executing station
Powering OFF and ON or resetting the CPU module
*1
starts the test.
During test execution
The MODE LED flashes, and the target station No.
turns ON.
S
1 1
T.
N
2
O.
4
8
X100 10
After approx. 10 seconds,
is the D LINK LED ON?
Set it to online mode, and turn the power OFF and
ON or reset the CPU module.
Test completion (Failed)
The MODE LED flashes, and the target station No.
and ERR.LED turn ON.
S
1 1
T.
N
2
O.
4
8
X100 10
The cable used in the station-to-station test is faulty.
Replace it.
*1 When the redundant system is in separate mode, power OFF and ON only system B or reset the CPU module of system
B.
*2 When the redundant system is in separate mode,
1) Set the mode of system B to online mode, and write the data to the system B CPU module.
2) Power OFF and ON only system B or reset the CPU module of system B.
3) Connect the programming tool to the control system CPU module, and change the mode of the redundant system
to the backup mode.
172
1 RUN PRM
2 MODE D LINK
4 SD RD
8 ERR.
1
Remains OFF
(Completed normally).
*2
End
1 RUN PRM
2
MODE D LINK
4 SD RD
8 ERR.
1
Powering OFF and ON or resetting the CPU module
activates the online mode.
During station-to-station test execution, data link
stops on the executing and target stations. (Other
stations continue data link.)
During test execution
The MODE LED flashes, and the executing station
No. turns ON.
S
1 1 1
T.
N
2 2
O.
4 4
8 8
X100 10 1
ON
While the executing station is in online mode, the
target station operates in online mode.
Target station
RUN PRM
MODE D LINK
SD RD
ERR.
End