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Toimitusaika 14-22pv
4-Port RS-422/485 Industrial Communication Board
ISA bus

The Industio CI-134 series of multiport serial boards is designed for RS-422/485 industrial communication. It supports 4 independent RS-422/485 ports that can control up to 128 devices in a multidrop environment.

To ease 2-wire RS-485 half-duplex control, Automatic Data Direction Control™ intelligence is built into each CI-134 board, eliminating the need for additional software. Hence, Windows applications can manage the RS-485 port without needing extra code to control the half-duplex protocol.

To meet the demand of high reliability in an industrial environment, optical isolation (2 KV) and surge protection (25 KV ESD) options are also available in this series of multiport serial boards.


Hardware I/O controller

16C550C or compatible x 4

Connector type DB37 to Male DB9

Bus ISA (16 bit)

Serial RS-422/485

No. of ports 4

Signals RS-422: TxD+/-, RxD+/-, RTS+/-, CTS+/-, GND

RS-485: Data+/-, GND

RS-485 data control Auto ADDC or by RTS

Built-in termination resistor RS-422: 120 Ohm

RS-485: 120 Ohm, jumper enabled/disable


Speed 50 bps – 921.6 Kbps

Max. no. of ports 16 (4 boards)


Parity None, even, odd, space, mark

Data bits 5, 6, 7, 8

Stop bits 1, 1.5, 2

IRQ 2 (9), 3, 4, 5, 7, 10 (Default), 11, 12, 15

I/O address 0x0000 – 0xFFFF (Default: 0x180)

Valmistaja / BrandMoxa
Data InterfaceISA