1747-KE DH-485 to RS-232C Interface Module (SLC 500)

Need a proven way to connect serial devices to legacy DH-485? The Allen-Bradley 1747-KE installs in a 1746 chassis and transparently bridges DH-485 traffic to RS-232C. Typical use cases include integrating PanelView/HMI terminals, serial data loggers, engineering laptops, dial-up/leased-line modems and third-party SCADA equipment with SLC 500 processors.

Why choose 1747-KE for SLC 500 modernisation

• Seamless bridging: DH-485 node addressing with RS-232C handshaking for robust serial links.

• Drop-in fit: Powered by the 1746 backplane; mount in any free slot.

• Diagnostics built-in: Front LEDs for power, DH-485 activity and serial link status cut troubleshooting time.

• Brownfield friendly: Keep existing DH-485 networks while adding PCs/OPCs, HMIs or remote access.

• Stable & serviceable: A go-to interface for plants standardised on SLC 500.

Applications

Packaged machines, utilities, metals, water/wastewater skids, OEM retrofits, field service access.

What Seven Star provides

• Correct cables/pinouts, node planning and DH-485 baud settings.

• Pre-shipment functional check on request.

• Alternatives if you’re migrating away from DH-485.

FAQs

• What does the 1747-KE actually bridge? DH-485 to RS-232C (bi-directional).

• Extra power needed? No. It’s backplane-powered in a 1746 rack.

• Is it protocol-converting to DF1? It bridges network access; serial protocol options depend on your endpoint—ask us and we’ll validate.

Call to action

Send us your DH-485 node list and serial device details—we’ll confirm cable set, settings and ship a tested 1747-KE.