Axis Q7404 Guía de instalación descargar pdf (Pagina 16)

Page 16 AXIS Q7404 Installation Guide

RS-485/RS-422 connector - For each video channel, AXIS Q7404 has two 2-pin terminal blocks

for the RS-485/422 serial interface used to control auxiliary equipment, e.g. PTZ devices.

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-485A alt RS-485/422RX(A) 1 RX pair for all modes (combined RX/TX for 2-wire RS-485)

RS-485B alt RS-485/422RX(B) 2

RS 485/422TX(A) 3 TX pair for RS-422 and 4-wire RS-485

RS 485/422TX(B) 4

234

RX/TX

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 83 84

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Axis Q7404 Guía de instalación Pagina 16