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Allen Bradley PLC 3 1775-MR4

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1775-MR4

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The 1775-MR4 is a CMOS RAM memory module developed by Allen Bradley for use in PLC-3 systems. This component interfaces efficiently, featuring a memory capacity of 16 kB at a voltage of 5 VDC, with a current rating of 100 mA.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1775-MR4

ManufacturerAllen Bradley
Product TypeCMOS RAM Memory Module
Product LinePLC 3
Part Number1775-MR4
Weight2.00 lbs (0.91 kg)
Expansion BusEBUS Compatible
Voltage5 VDC
Current100 mA
Memory Capacity16 kB
Connectors4 × 50-Pin
ProgrammingLocal/Remote
Data DisseminationSupported
Memory TypeCMOS
Industrial Network SupportEtherNet/IP, PROFINET
DiagnosticsReal-Time
Network CompatibilityCIP (Common Industrial Protocol)
ApplicationPLC-3 Systems
MountingChassis Slot
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The 1775-MR4 from Allen Bradley is a specialized CMOS RAM memory module designed for integration within PLC-3 systems. Rated for operation at 5 VDC, it draws a current of 100 mA and has a total memory capacity of 16 kB, facilitating effective data storage and retrieval for programming tasks.

This component features four 50-pin connectors, allowing for straightforward connectivity. It is compatible with the EBUS expansion bus, which enhances its integration within various setups. Users can program this module both locally and remotely, which adds convenience for system management.

In addition, the 1775-MR4 supports data dissemination, ensuring that information can be shared across devices efficiently. For industrial applications, it provides support for EtherNet/IP and PROFINET networks, utilizing the Common Industrial Protocol (CIP) for streamlined communication.

Real-time diagnostics are a key feature of this module, enabling immediate monitoring of operations and alerts for any functional issues. This enhances reliability during system deployment. The module is designed to be mounted in a chassis slot, ensuring a compact fit within the designated control system.

Revision Part #Also known as
1775-MR4 Ser A1775-MR4/A, Series A, Rev A
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