Rs 422 Cabling - Serial Port 1; Rs 422 Cabling - Serial Port 2; Fig. 8-5: Inserting A Terminator And Inverting The Open-Circuit Potential; Fig. 8-6: Rs 422 Cabling For Serial Port 1 - Addi-Data ADDICOM PA 7400 Series Technical Description

Technical description

Fig. 8-5: Inserting a terminator and inverting the open-circuit potential

RS 422 cabling - serial port 1

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If the communication software controls the modem control signals,
è connect the modem control signals as follows to the connector.

RS 422 cabling - serial port 2

The modem control signals are connected on the board as follows:
Chapter 8

Fig. 8-6: RS 422 cabling for serial port 1

RTSA → CTSA
DTRA → DSRA → DCDA → RIA
RTSB → CTSB
DTRB → DSRB→ DCDB → RIB
PA 7400
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