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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Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.
Mastering PLC Power Supply Architectures and Operating Voltages
Selecting the correct operating voltage is a critical step in designing reliable industrial automation systems. Whether you are working with a compact PLC or a large-scale DCS, your power architecture dictates the system's longevity. In this guide, we explore the standard voltage ranges and power distribution strategies required to maintain stable factory automation operations.