RS-422 Full Duplex not working in Rx

rreignierrreignier New Member Posts: 42

Hi,

On our Up Xtreme, we want to use the two COM connectors in RS-422 mode.
After configuring the BIOS and following the pinout found in the Quick Installation Guide:
COM port pinout

We have managed to send some RS-422 Full Duplex frames using the TX- and TX+ pins but when receiving frames on RX- and RX+ there is only garbage received.

We have checked the signals with a scope, they are clean an the scope is able to correctly decode them in both directions.

@DCleri could you please confirm the pinout and that the RS-422 is functional in both directions with current BIOS?

Could we have the pinout of the DB9 connector on the chassis to confirm the correct wiring please.

Thanks.

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