Overview

The 1785-MJ module is part of the Allen-Bradley PLC-5 family and is used primarily for input and output operations in industrial automation systems. It offers a range of features designed to enhance process control and monitoring.

Specifications

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Part Number/Catalog No.: 1785-MJ

• Module Type: EEPROM Memory Cartridge

• Description: EEPROM

• Function: Program Backup

• Compatibility: Standard PLC-5 Processors

• Memory Capacity:

  • EEPROM: 8 Kilowords
  • SRAM: 6 Kilowords

• Power Requirements:

  • Backplane Requirement: 2.5 Amperes at 5 Volts DC

• Input/Output Specifications:

  • Max Analog I/O: 3072
  • I/O Scan Time Per Rack:
    • 10 ms at 57.6 kbits/s
    • 7 ms at 115.2 kbits/s
    • 3 ms at 230.4 Mbits/s
  • Max I/O Chassis Total: 93
  • Max I/O Chassis Extended Local: 0
  • Max I/O Chassis Universal Remote: 32 Max. Per I/O Link

• Ports:

  • RS-232-C/422-A/423-A Ports: 1

• Control Coprocessor Expansion Port: Yes