Test Run (Communication Test) - Mitsubishi Electric FX3U-232-BD User Manual

Melsec-f fx series programmable controllers data communication edition
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FX Series PLC User's Manual - Data Communication Edition
N:N Network
6.

Test Run (Communication Test)

This chapter explains the communication test procedures for the N:N Network.
It is recommended to first wire the master station and slave stations, initialize communication settings in the
FX PLCs, and then execute the communication test using the following procedure to confirm 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 stations.
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 all slave stations in communication, and then turn
ON the power of these 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 each slave station.
Set the inputs X000 to
X003 to ON or OFF.
Master station
Slave station No. 1
Confirm that the inputs in the
master station turn ON or OFF
according to the outputs Y000
to Y003.
6 Test Run (Communication Test)
For program examples, refer to Section 6.2.
Slave station No. 2
Confirm that the inputs in the
master station turn ON or OFF
according to the outputs Y000
to Y003.
6.1 Test Procedure
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