Allen-Bradley 1785-PFB PLC-5 Communication Coprocessor Module

Description

The Allen-Bradley 1785-PFB is an industrial communication module designed to establish network linkages within distributed control configurations. Operating as a hardware integration device for the legacy PLC-5 processor architecture, it provides co-processing resources that handle data exchanges independently of primary scanner routines. The assembly features a dedicated serial portal layout, combining a main channel that executes signaling protocols over a standard RS-485 interface with a secondary auxiliary port that supports standard RS-232 serial links. By handling specific network traffic and communication overhead locally, the 1785-PFB ensures continuous and consistent data transfers across heterogeneous field networks and specialized host infrastructure in continuous processing environments.

Features

• Dual integrated serial channels accommodating parallel RS-485 and RS-232 infrastructure layout options.
• Independent coprocessor execution loops to offload heavy serialization layers from the host central processor unit.
• Front-facing built-in multi-segment status display offering localized visual feedback.
• Standard form-factor alignment matched for direct installation inside conventional PLC-5 chassis slots.

Applications

• Real-time network interfacing with peripheral instruments and auxiliary field instrumentation.
• Distributed multi-node serial networking within centralized processing operations.
• Point-to-point data acquisition links for localized host SCADA tracking.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Chassis Slot Insertion: Slide the module firmly into its designated chassis path until it fully seats into the rear connection socket strip.
• Environmental Oversight: Maintain operating space conditions within 0 to 60 degC to prevent localized overheating of internal chips.
• Condensation Control: Ensure surrounding humidity scales strictly between 5% and 95% without non-condensing moisture accumulation.