1785-BCM | Allen-Bradley | PLC-5 Backup Communication Module In Stock

Product Review

The 1785-BCM is a Backup Communications Module (BCM) designed for use with the PLC5 controller platform from Allen Bradley (Rockwell Automation). This module provides high-speed switchover of communication paths using Data Highway Plus (DH+) and Remote I/O (RIO) protocols, ensuring redundancy and reliability in critical industrial control systems. It supports various PLC5 processors and integrates seamlessly into existing automation setups. The 1785-BCM offers advanced features such as internal buffering and fast switchover capabilities, making it an essential component for maintaining system uptime and operational continuity.

Specification

• Part Number: 1785-BCM
• Model: Backup Communications Module (BCM)
• Manufacturer: Allen Bradley (Rockwell Automation)
• Communication Protocols: Data Highway Plus (DH+), Remote I/O (RIO)
• Chassis Type: Single-slot chassis
• Switchover Speed: Up to 1.2 Megabaud via High-Speed Serial Link (HSSL)
• Internal Buffer: Up to 4K Words
• Chassis Compatibility: 1771 I/O chassis (keying locations between 8 and 10 or between 34 and 36)
• Wiring Arm Requirement: Catalog number 1771-WG

Feature

High-Speed Switchover

The 1785-BCM supports high-speed switchover of communication paths via Data Highway Plus (DH+) and Remote I/O (RIO) protocols. With a switchover speed up to 1.2 Megabaud via the High-Speed Serial Link (HSSL), this module ensures minimal downtime during processor failures or other critical events.

Internal Buffer

Featuring an internal buffer of up to 4K Words, the 1785-BCM can store data temporarily during switchover events, preventing data loss and ensuring continuous operation of the control system.

Redundancy and Fault Tolerance

Designed for redundant configurations, the 1785-BCM initiates switchover in various scenarios such as power failure, processor errors, and partner module faults. It also supports manual switchover from RUN to PROGRAM mode, REMOTE RUN to REMOTE PROGRAM transition, and changes between REM RUN and REMOTE TEST modes.