Overview
The Allen-Bradley 1747-KE is a communications interface module designed for the SLC 500 controller family. This module facilitates reliable data exchange between DH-485 and RS-232C networks, making it essential for legacy automation systems requiring multi-protocol connectivity. The 1747-KE supports the Allen-Bradley DF1 communications protocol and provides dedicated ports for network interfacing and configuration.
Key Features
- Multiple Communication Ports: One DH-485 port, one DF1 communication port (RS-232/423/422/485), and one dedicated DF1 configuration port
- Protocol Support: DF1 full-duplex communication with configurable baud rates from 1,200 to 19,200 Kbps
- Electrical Isolation: RS-232 port isolated to 500V DC for noise immunity in industrial environments
- Status Monitoring: Eight LED indicators for diagnostics and operational feedback
- SLC 500 Compatible: Single-slot module that directly mounts to any SLC 500 chassis
Technical Specifications
- Catalog Number: 1747-KE
- Series: SLC 500 Interface Module
- Module Type: Single-slot DH-485/DF1 interface
- Power Supply Voltage: 5V DC and 24V DC from SLC backplane
- Backplane Current Draw: 150 mA at 5V, 40 mA at 24V
- Communication Interfaces: DH-485, DF1 (RS-232/423/422/485)
- Baud Rate: 1,200–19,200 Kbps
- Electrical Isolation: 500V DC (RS-232 port)
- Operating Temperature Range: 0°C to +60°C
- Connector Types: 9-pin D-sub (DF1/Configuration), 6-pin Phoenix (DH-485)
- Weight: 0.37 lbs
- Cable: Belden 9463 compatible
- Certifications: UL, CSA, CE
Typical Applications
- Remote programming and diagnostics of SLC 500 controllers via modem or dial-up connections
- Bridging isolated DH-485 networks to RS-232 terminal devices or ASCII terminals
- Integration with legacy SCADA systems and operator interfaces requiring serial communication
- Supervisory monitoring and data logging for distributed SLC 500 systems
- Installation in facilities where multi-node DH-485 networks require external device connectivity
Compatibility & Replacements
Compatible With
- SLC 5/03, SLC 5/04, and SLC 5/05 processors
- DH-485 networks with 1747-AIC link coupler for multi-node configurations
- DF1 protocol devices and third-party modem equipment
- RS-232, RS-422, and RS-485 serial interfaces
- SLC 500 industrial chassis and backplane systems
Replaces / Drop-In Replacement For
- Previous versions and equivalent DH-485/RS-232C interface modules in SLC 500 applications
- Note: Always verify backplane current requirements and existing cable connections before installing as a replacement.
Works With
- Allen-Bradley RSLinx communications software for configuration and diagnostics
- 1747-AIC DH-485 link coupler (required for multi-node networks)
- 1747-C11 and 1747-C13 cables for DH-485 port connections
- DF1 protocol-enabled HMIs, terminals, and programming devices
- Legacy SCADA and operator interface platforms requiring serial ports
