Axis Communications P1357, P1355 manual Function Pin

Page 12 AXIS P1355/P1357 Installation Guide

RS-485/422 - two 2-pin terminal blocks for RS-485/422 serial interface used to control auxiliary equipment.

The RS-485/422 serial port can be configured in the following port modes:

•Bidirectional RS-485 half-duplex port for data transmission using two wires, one combined RX/TX pair.

•Bidirectional RS-485 full-duplex port for data transmission using four wires, one RX pair and one TX pair.

•Unidirectional RS-422 port for transmitting or receiving data using two wires, RX- or TX pair.

•Bidirectional RS-422 full-duplex port for data transmission (point-to-point) using four wires, one RX pair and one TX pair.

Function	Pin	Notes
RS-485/422TX(A)	1	TX pair for RS-422 and 4-wire RS-485
RS-485/422TX(B)	2
RS-485A alt RS-485/422RX(A)	3	RX pair for all modes (combined RX/TX for 2-wire RS-485)
RS-485B alt RS-485/422RX(B)	4

Rx/Tx
4	3

Tx
2	1