12 Appendix C: RS-422 Connections
RS-422 Connections
| DB9M | ||
Signal Name | Direction |
| Pin |
Receive Data A (−) | In | RXDA (−) | 1 |
Receive Data B (+) | In | RXDB (+) | 2 |
Transmit Data B (+) | Out | TXDB (+) | 3 |
Transmit Data A (−) | Out | TXDA (−) | 4 |
Signal Ground | GND | 5 | |
Clear to Send A (−) | In | CTSA (−) | 6 |
Clear to Send B (+) | In | CTSB (+) | 7 |
Request to Send B (+) | Out | RTSB (+) | 8 |
Request to Send A (−) | Out | RTSA (−) | 9 |
Document Number: |
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