DPR1097 RS-422

Pin definition

  • GND
  • A = R +
  • B = R -
  • Z = T-
  • Y = T +

Working Principle

To run a loop test, connect A->Y, B->Z. Connect USB-TTL bridge for example PL2303TA, TXD to RXD, RXD to TXD, 5V-5V, GND-GND.

Ref

  • https://www.electrodragon.com/product/rs422-ttl-module-full-duplex-rs-422/

Legacy Wiki

  • https://w.electrodragon.com/w/Category:Interface
  • https://w.electrodragon.com/w/RS-422

  • RS422-dat - DPR1097