Product Details
Product Overview
The Allen Bradley 1785-V40L operates as a high-performance VMEbus-based processor within the PLC-5 architecture. This module enables the integration of standard Allen Bradley control logic directly into VME-based computer systems, bridging the gap between high-level computational processing and industrial I/O control. We supply this processor as 100% Brand New and Factory Original, providing a critical solution for maintaining validated legacy systems where the manufacturer has discontinued production.
Technical Specifications
The 1785-V40L utilizes a robust memory structure and backplane interface to manage complex automation tasks:
| Feature | Specification |
| Module Type | PLC-5 VMEbus Processor |
| Program Memory | 48K Words (Data Table and Program) |
| VME Interface Memory | 64 KB Dual-Port VME Memory |
| Architecture | VMEbus Specification C.1 Compatible |
| I/O Capacity | Supports Extensive PLC-5 Remote I/O Racks |
| Backplane Compatibility | VMEbus (Standard 6U Height) |
| Weight | 1.52 lbs (0.69 kg) |
| Condition | 100% Brand New Original Stock |
Engineering Advantages
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Seamless VMEbus Integration: This module allows a standard VMEbus host computer to access PLC data tables directly through 64KB of dual-port RAM. This eliminates the latency associated with serial or Ethernet-based gateways, facilitating real-time data exchange between high-level software and field hardware.
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Legacy Infrastructure Extension: The 1785-V40L supports existing PLC-5 programming logic and Remote I/O (RIO) networks. Engineers can replace aging or failing processors without rewriting thousands of lines of ladder logic, significantly reducing the risks and costs of system migration.
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Robust Diagnostic Capabilities: The processor hardware monitors system status and backplane communication integrity continuously. Integrated front-panel LED indicators provide immediate feedback on CPU health, battery status, and network activity, accelerating on-site troubleshooting.
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High-Reliability Memory Retention: The module utilizes non-volatile memory and battery-backed RAM to protect critical machine parameters during power loss. This ensures that the system retains its state and setpoints, preventing costly re-homing procedures upon restart.
FAQs
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Is this 1785-V40L unit brand new?
Yes. We guarantee this unit is 100% Brand New and ships in its original factory-sealed packaging. We do not provide refurbished or used surplus modules, ensuring the hardware arrives with zero run-time and pristine gold-plated backplane connectors.
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Can the 1785-V40L replace a standard 1785-L40L?
While the logical performance (48K memory) is similar, the 1785-V40L is a VMEbus module. It requires a VMEbus chassis and host, whereas the 1785-L40L fits into a standard 1771 I/O chassis. Always verify your backplane type before purchase.
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What software do I use to program this processor?
This module supports standard RSLogix 5 or 6200 series programming software. You can upload and download programs through the DH+ port or via the VMEbus interface, depending on your system configuration.
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How does the dual-port RAM function in a VME system?
The 64KB VME memory acts as a shared mailbox. The VME host reads/writes to this memory space simultaneously with the PLC-5 processor, allowing for high-speed, interrupt-driven synchronization between the two environments.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Selecting the Right Cables for Industrial Automation: A Comprehensive Guide
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Preventing Spurious Trips in Emergency Stop Systems: A Technical Guide
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