Honeywell 900C73R-0000-42 I/O Scanner Module

The Honeywell 900C73R-0000-42 is an I/O Scanner Module for the HC900 control system. It provides an interface for communication between the controller and its I/O equipment, supporting the exchange of field data with the control system. Its module identification, physical dimensions, and weight are useful when checking replacement requirements and preparing procurement specifications.

Functional Description

The scanner operates in a remote I/O rack and manages data exchange between the rack’s I/O modules and the HC900 controller. Input data travels from the I/O modules to the controller, while output data travels in the opposite direction. Furthermore, the scanner monitors module diagnostic status and reports detected conditions to the controller.

Communication and Redundancy

The 900C73R is a dual-port I/O Scanner designed for redundant HC900 controller configurations. Each communication port connects to a corresponding controller, allowing the system to exchange remote I/O data through separate controller connections.

Meanwhile, the scanner synchronizes data exchanges with the controller scan cycle. This maintains consistent communication between the controller and remote I/O modules.

Technical Specifications

System Configuration

The scanner forms part of the HC900 remote I/O architecture. It collects input data from modules installed in the remote rack and transfers output commands from the controller to the appropriate I/O modules.

In addition, the scanner monitors I/O module diagnostic information. Therefore, its correct model configuration is important when replacing an existing scanner or maintaining a redundant controller system.

Frequently Asked Questions

Q: What is the function of the Honeywell 900C73R-0000-42?

A: It scans remote I/O modules and transfers input and output data between the remote I/O rack and the HC900 controller.

Q: Is the 900C73R-0000-42 designed for redundant systems?

A: Yes. The 900C73R is a dual-port scanner intended for redundant HC900 controller configurations.

Q: Can this module replace another HC900 I/O Scanner?

A: Not necessarily. Check the complete model number and system configuration before replacement. Honeywell specifies matching model-number suffix requirements for redundant and non-redundant configurations.