Mitsubishi Programmable Controllers FX-232ADP Manual de usuario Pagina 153

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12
FX communication
Diagnostics 12
12-3
12.3 Parallel Link
12.3.1 Diagnostics
1 ) Check the status of the RD(RXD) LED and the SD(TXD) LED provided on each
communication unit.
If the RD(RXD) and the SD(TXD) LED are lighted and extinguished, nothing is wrong.
If the RD(RXD) LED is lighted/extinguished but the SD(TXD) LED is not lighted/extinguished
(not lighted at all), check the setting of the master station and the slave stations.
If the RD(RXD) LED is not lighted/extinguished, check the wiring.
2 ) Make sure that the master station and the slave stations are set correctly. If the setting is
incorrect, correct it.
3 ) Make sure that the devices for the master station and the slave stations are handled
correctly. If they are handled incorrectly, correct the program so that they are handled
correctly.
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