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