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SKU: 1785-V40V

Allen-Bradley 1785-V40V PLC-5 VMEbus Processor Module

The Allen-Bradley 1785-V40V is a high-performance PLC-5 processor card designed for VMEbus systems. Featuring 48K words of SRAM and supporting up to 1920 I/O points, this module integrates programmable logic control directly into standard 6U VMEbus chassis for advanced industrial computing.

Product Description

The Allen-Bradley 1785-V40V belongs to the specialized family of enhanced PLC-5 processors designed specifically for VMEbus (Versa Module Europa) architectures. While it maintains the powerful logic capabilities of the standard PLC-5 platform, this processor utilizes the ANSI/IEEE 1014-1987 standardized communication backplane instead of a traditional 1771 I/O chassis. This integration allows industrial computer systems to leverage robust programmable logic functions directly within a high-speed VMEbus environment.

Versatility defines the operational profile of the 1785-V40V. The module effectively manages complex automation tasks by acting as either a bus master or a slave. In master mode, the processor actively retrieves data from auxiliary VMEbus modules, whereas in slave mode, it facilitates data accessibility for other network-connected devices. This bi-directional communication ensures that the 1785-V40V integrates perfectly into multi-processor or hybrid control systems.

Engineers can optimize system density by installing the 1785-V40V into a standard 6U VMEbus chassis. The hardware occupies only two slots, yet a single chassis can accommodate up to eight individual 1785-V40V units for high-demand processing applications. With 48K words of SRAM and extensive I/O support, this processor delivers a bridge between high-level computing and reliable, industrial-grade process control.

Key Technical Characteristics

  • Manufacturer: Allen-Bradley / Rockwell Automation
  • Model/Order Number: 1785-V40V
  • Processor Family: PLC-5 Enhanced (VMEbus Version)
  • Memory Capacity: 48K Words of Battery-Backed SRAM
  • I/O Capacity: Up to 1920 Total I/O Points (Discrete or Analog)
  • Communication Ports: 4 DH+/Remote I/O channels; 1 RS-232C port
  • Bus Interface: VMEbus (ANSI/IEEE 1014-1987)
  • Form Factor: 6U VMEbus Card (Occupies 2 slots)
  • Backplane Compatibility: Supports up to 8 processors per VME chassis
  • Module Weight: 0.72 kg
  • Dimensions: 4.1 x 18.8 x 26.2 cm