Allen-Bradley 1771-HODS PLC-5 Converter ODS Module

June 10, 2026 • 2 min read • wayne • Science

Product Summary

The Allen-Bradley 1771-HODS Converter Option ODS module bridges the PLC-5 123 Motion Control System with both the ODS terminal and handheld pendant. It supports RS-232 and RS-422 communication and enables remote operation up to 393 meters using the optional 1771-HLL longline kit.

Expert Installation Guide for the 1771-HODS Module

Mount the 1771-HODS module on a standard DIN rail. Connect the handheld pendant via the RS-232 port at distances up to 8 meters. For extended reach, install the 1771-HLL longline option. This setup lets you place the pendant up to 393 meters (1200 feet) from the motion controller.

For the ODS terminal, use the RS-422 communication connector. Direct connection supports up to 393 meters. With the longline option, you achieve the same extended distance. Ensure proper cabling to avoid signal degradation.

Choose one of four termination panels for added flexibility. The Temposonic panel works with linear displacement transducers. The Encoder panel supports one axis and supplies external encoder power. The Resolver panel handles single or dual resolver configurations.

Verify wiring polarity and shield connections before power-up. The module automatically configures communication protocols. Test the pendant and terminal functions to confirm proper operation.

Expert Technical Evaluation & Performance Review

The 1771-HODS module delivers reliable signal conversion for the IMC 123 system. Its dual‑protocol support (RS‑232/422) covers both short‑range and long‑range device connections.

The RS‑232 port handles the pendant within a 25‑foot radius, ideal for local control. The RS‑422 port extends the ODS terminal to 1200 feet, suiting large factory floors.

When you add the 1771‑HLL longline option, both pendant and terminal reach the full 1200‑foot distance. This flexibility reduces the need for additional controllers.

The module mounts securely on a DIN rail, simplifying installation in existing cabinets. The available termination panels allow you to integrate Temposonic, encoder, or resolver feedback without extra hardware.

Overall, the 1771-HODS provides a cost‑effective way to expand the motion control system’s operator interface. It maintains robust communication integrity over long cable runs, ensuring stable production.