Allen Bradley 1747-DCM/A SLC 500 Direct Communication Module

Overview

The Allen Bradley 1747-DCM/A is a Direct Communication Module designed for the SLC 500 programmable controller platform. It provides stable and efficient communication between controllers, operator interfaces, and external industrial devices, helping improve data transfer reliability in automation systems.

General Information

Part Number: 1747-DCM/A

Manufacturer: Allen Bradley

Brand / Country of Origin: Allen Bradley / USA

Series: SLC 500

Type: Direct Communication Module

Mounting: Rack-mounted installation within SLC 500 systems

Technology: Industrial serial communication and controller networking

Power Specifications

Supply Voltage: 5 V DC via SLC 500 backplane

Power Consumption: ≤ 2 W

Input Power Source: Backplane-powered module design

Protection Features: Short-circuit and surge protection support

Status Indicators: LED indicators for module and communication status

Communication & Interface

Communication Ports: RS-232 / RS-422 / RS-485 compatible

Supported Protocols: DF1, DH-485, and SLC communication protocols

Transmission Speed: Up to 115.2 kbps

Diagnostics: Communication monitoring and fault detection functions

Configuration Method: DIP switch setup and controller programming

Reset Function: Supports module reset and communication restart

Environmental

Operating Temperature: 0 to +60 °C

Storage Temperature: −20 to +85 °C

Humidity: Up to 95% RH, non-condensing

Protection Rating: IP20 for industrial cabinet environments

Environmental Resistance: Suitable for vibration and standard factory conditions

Dimensions & Weight

Dimensions (L × W × H): 144.5 × 34.6 × 130.18 mm

Weight: 0.45 kg

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