Mitsubishi FX2N-64CL-M, User Manual

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FX2N-64CL-M CC-Link/LT Master Block Troubleshooting 12
12-7
12.4 Self-loop-back test
In the self-loop-back test, the FX
2N
-64CL-M checks whether it is operating normal by receiving
data sent by itself.
In this test, it is not necessary to connect remote stations.
(Connect the FX
2N
-64CL-M to the power adapter or dedicated power supply, and turn ON the
power for communication.)
• When the FX
2N
-64CL-M is set to TEST mode while it is connected to an FX
1N
Series PLC,
the PLC does not start up.
(The self-loop-back test will be executed normally, and the test result will be indicated by the
status indicator LEDs.)
12.4.1 Operating procedure
The operating procedure is as described below.
1) Set the FX
2N
-64CL-M to TEST mode (by setting bit 7 of the DIP switch to ON). Set the
power of the PLC to ON.
At this time, turn ON the power for communication (power adapter or dedicated power
supply).
2) The system automatically starts the self-loop-back test.
3) When the self-loop-back test is completed, the result is indicated by the status indicator
LEDs.
If the FX
2N
-64CL-M is operating normally, the L RUN LED lights. If it is not the L ERR. LED
lights.
4) For returning to the normal operation, return the FX
2N
-64CL-M to ONLINE mode (by setting
the bit 7 of the DIP switch to OFF), reset power.