Description

Brief Product Description

The Allen-Bradley 1785-V40L is a high-performance VMEbus-based programmable controller designed to bridge PLC-5 functionality with VME-integrated systems. It provides expansive memory and versatile communication ports for complex industrial data management and machinery control.

Product Description

Integrated VMEbus Control Architecture

The Allen-Bradley 1785-V40L represents a specialized crossover in industrial computing, functioning as a PLC-5 processor optimized for VMEbus environments. This controller allows for high-speed data exchange across a VME backplane, supporting a throughput of up to 64 KB. To facilitate seamless inter-controller communication, the hardware utilizes the MG data type for standardized messaging. This architecture makes the 1785-V40L an essential choice for systems where traditional PLC logic must interface directly with VME-based specialized computers or high-speed data acquisition hardware.

Expansive Memory and I/O Connectivity

Equipped with a user memory capacity of 48,000 words, the 1785-V40L handles extensive logic programs and data tables with ease. The module features an impressive array of connectivity options, including four Data Highway Plus (DH+) ports and a dedicated Remote I/O port. These interfaces allow the processor to manage up to 15 I/O racks and coordinate up to 120 I/O points across the network. Furthermore, the inclusion of an RS-232/422/423 serial port provides a dedicated channel for peripheral devices such as HMIs, barcode scanners, or local programming terminals.

Diagnostic Monitoring and System Reliability

Reliability remains a priority for the 1785-V40L processor, which features a comprehensive set of LED indicators for real-time troubleshooting. The front panel displays the status of the internal battery, RUN/FAULT modes, and specific communication activity across its multiple channels. Separate indicators for extended local I/O scanning and remote I/O scanning help technicians quickly isolate network bottlenecks. Because this unit is CE certified and built to Series C specifications, it ensures compliance with rigorous safety and environmental standards required for global industrial deployment.

Technical Specifications