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1785-BCM | Allen Bradley | AB 1785BCM

  • Brand/ Manufacturer:

    Allen Bradley
  • Dimensions:

    3x14.7x25.8cm
  • Weight:

    0.56kg
  • Country of Origin: :

    United States
  • Description:

    Back-up Commmunications Module

Mfr. Part Number:

1785-BCM

Manufacturer:

         Allen-Bradley / Rockwell Automation

Description:

Allen-Bradley 1785-BCM PLC-5 Back-Up Comm. Module, 1 x HSSL & 2 x DH+/RIO

Full Description:

Allen-Bradley 1785-BCM PLC-5 Back-Up Communication Module, 1 x High Speed Serial 

Link (HSSL) Interface and 2 x DH+/RIO Interfaces, provides system backup if the 

processor or other equipment in the system fail

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The Allen-Bradley 1785-BCM is a Backup Communications Module (BCM) that is used to provide high-speed switchover of communication path using Data Highway Plus (DH+) and Remote I/O (RIO) protocol. It is used for redundant PLC5 processor configuration and compatible for use with PLC5 processors such as PLC-5/15 series B, -5/20, -5/25, -5/30, -5/40, and -5/60 processors.


The Allen-Bradley 1785-BCM is a legacy communication module that is used with the PLC5 controller platform. This module is a single-slot chassis that is used to provide communication redundancy and switchover capability from a primary PLC processor to a stand-by PLC5 processor. This module is able to provide high-speed Data Highway Plus (DH+) and Remote I/O (RIO) communication backup via the high-speed serial link (HSSL) with switchover speed up to 1.2 Megabaud.


The 1785-BCM manages data transfer from the primary to secondary controller using block transfer instructions configured in the user program developed using the RSLogix5 programming software.




Wiring Arm

1771-WG

DH+/RIO Interface

2

High Speed Serial Link Interface

1

Module Type

Backup Communications Module

Part Number/Catalog No.

1785-BCM

Brand

Allen-Bradley

Compatible processors

PLC-5/15 series B, -5/20, -5/25, -5/30, -5/40, and -5/60

Module Location

1771 I/O Chassis (local)

Keying Locations

between 8 and 10 between 34 and 36

Customer Relay

.25A @ 24V dc (resistive)

HSSL

communicates with 1.2 Megabaud

Operational Temperature

0 Deg. Celsius to 60 Deg. Celsius (32 Deg. Fahrenheit to 140 Degree Fahrenheit)


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