Allen Bradley 1785-MS CMOS RAM Memory Module

Allen-Bradley 1785-MS CMOS RAM Module Description and Technical Specifications

The Allen-Bradley 1785-MS is a CMOS RAM module designed for use with the programming modules of the Allen-Bradley PLC 5 series. It is compatible with the PLC-5/15 and PLC-5/25 processors. This module is essential for storing system settings such as bus speed, installed hard drives, and the start sequence of the system.

Key Features

• Real-Time Clock Integration: The 1785-MS module is linked to the real-time clock of the PLC, playing a crucial role in selecting and configuring the PLC.

• Memory Capacity: It offers a storage capacity of 8,000 words.

• Mounting: The module is designed to be mounted on an I/O rack.

Technical Specifications

• Brand: Allen-Bradley / Rockwell Automation

• Series: PLC 5

• Part Number: 1785-MS

• Device: Memory module

• Type: CMOS RAM

• Capacity: 8,000 words

• Compatibility: PLC-5/15 and PLC-5/25 processors

• Mounting: I/O Rack

• Size: 55.4 mm (L) x 1.73 mm (H) x 0.69 mm (D)

• Operating Temperature: 0 to 60 degrees Celsius

• Relative Humidity: 5 to 95%

• ESD Sensitivity: Yes

• UPC: 10612598115355

Allen Bradley Fanuc Main Products

1. ControlLogix: 1756/1760/1788 Series：1756-EN2T/B、1756-OB32、1756-CNBR

2. CompactLogix: 1769/1768 Series：1769-PA2、1769-IQ32、1769-OF8V、1768-ENBT

3. SLC 500: 1747/1746 Series：1746-NIO4I、1746-OB32E、1746-OB16E、1747-L532

4. PLC-5: 1771/1785 Series：1771-OAN、1771-OW16、1771-P5E、1785-l40c15、1785-L60B

5. Flex I/O：1794-OA8、1794-IR8、1794-OE8H、1794-IB16D、1794-ACNR15

6. ProSoft: MVI69、PS69、MVI56、MVI94、MVI71、MVI46、3150

7. ICS TRIPLEX: T8431、T8461、T3401、T8310

Description

The 1785-MS is a CMOS RAM module that has been designed and distributed by Allen-Bradley to be exclusively used with the programming modules of this series. The compatible processors for this module are PLC-5/15 and -5/25. CMOS memory stores information about the system settings, for example, bus speed, hard drives installed and the start sequence of the system. Often CMOS memories tend to be taken as a BIOS due to the functionality these have. The Allen-Bradley 1785-MS CMOS RAM module is linked to the real-time clock of the PLC. This part is important when selecting the PLC and the settings it will have. For example, after having selected a specific PLC processor, a chassis needs to be selected and afterward a memory module along with a replacement battery. Once all these parts have been selected, an additional memory can be chosen from the catalog to improve the performance of the processor.

It is important to have in mind all the considerations before attempting to install the Allen-Bradley 1785-MS CMOS RAM module in a PLC-5 programmer. The programmer needs to be prepared and programmed to work with an additional memory and this memory needs to be routed to the programmer and applications it will support. The Allen-Bradley 1785-MS CMOS RAM module is sensitive to electrostatic discharge and it can be installed in locations with a temperature between the 0 and 60 degrees Celsius and a relative humidity of 5 to 95 percent.  Electronic parts are sensitive to weather conditions since these can be easily corroded.

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Key Highlights

1. Allen-Bradley( Rockwell )Series: 1756/1747/1746 Series 

2. Schneider(Schneider Electric)Series: 140 Series

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4. Westinghouse Series: 1C/5X  ...

5. Siemens: 6DD/6DP/6ES5/6DR/6GK Series

6. Woodward: SPC valve position controller, PEAK15 digital controller

7. Foxboro: FBM203/204/217/231, FCP240/270

8. Bently Nevada: 3500/3300/330180-Cable..

9. Triconex: 3008/3511/3625/3664/3721/3700A..

10. Honeywell: 51/MU/MC/TC/CC ...

11. ABB: Industrial robot parts of DSQC series,Bailey INFI90, DCS(AI810, DI810 PM645), S900I/O OCS(07KT97/98,07AC)

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