Mitsubishi FX3U-232-BD User Manual page 182

FX Series PLC User's Manual - Data Communication Edition
Parallel Link
6. Test Run (Communication Test)
This chapter explains the communication test procedures for the parallel link.
It is recommended to wire the master station and slave station, initialize communication settings in the FX
PLCs, and then execute the communication test using the following procedure to confirm the proper
operation.
6.1 Test Procedure
1
Creating programs for the communication test
Create new programs for the communication test for the master station and slave station.
2
Transferring the program to each PLC
Turn ON the power to each PLC, and transfer the program.
3
Validating the communication setting
When the PLC is in RUN mode, set it to STOP mode once, and then set it to RUN mode again.
Or turn OFF the power of the master station and slave station, and then turn ON the power to both
stations at the same time.
4
Confirming flashing of the communication status indicator lamps (SD and RD)
Confirm that the built-in SD and RD lamps of the communication equipment are flashing.
If they are off, take proper action while referring to the troubleshooting procedures described later.
5
Confirming the link of the master station
Set the PLC inputs (X000 to X003) to ON or OFF in the master station, and confirm that the outputs
(Y000 to Y003) turn ON or OFF in the slave station.
Set the inputs X000 to
X003 to ON or OFF.
Master station
C-32
Slave station
Confirm that the outputs Y000 to Y003
of the slave station turn ON or OFF
according to the inputs of the master
station.
6 Test Run (Communication Test)
→ For program examples, refer to Section 6.2.
6.1 Test Procedure