Rockwell / Allen-Bradley 1775-MR4 Memory Module
  • RAB_1775-MR4_View2
  • RAB_1775-MR4_View1

Rockwell / Allen-Bradley 1775-MR4 Memory Module

This Rockwell / Allen-Bradley 1775-MR4 Module is used and in excellent condition.

• 16K RAM Memory
• LED's indicating "Memory Error" and Battery Low"

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Stock # 72356-3
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Rockwell / Allen-Bradley 1775 Series Communication Adapter Modules

  • The PLC-3 Extension Chassis can Execute many Privileged and Non-Privileged Commands
  • PLC-3 Controllers use a form of Logical Addressing known as “Extended Addressing"
  • Expansion Modules are Transparent to the System
  • No Additional I/O Wiring or Programming with Expansion


The Rockwell/Allen-Bradley 1775 Series is a PLC-3 Communication Adapter Module. This module occupies one slot in a PLC-3 main chassis or expansion chassis. This module provides access to the expansion bus (EBUS) with 4 50-pin connectors. This series works with the 1770-KF2 to link intelligent RS-232-C or RS-422-A to a local area network.

Product Family: 1775, 1775-KA, 1775 KA, 1775-802, 1775 802,1775-LX, 1775 LX, 1775-MR4, 1775 MR4, 0528-2951, 0528-2584, 1775-MS8, 1775 MS8

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Rockwell / Allen-Bradley 1775 Series Communication Adapter ModulesRockwell / Allen-Bradley 1775 Series Communication Adapter ModulesRockwell / Allen-Bradley 1775 Series Communication Adapter Modules

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