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
-
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.
-
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.
-
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.
-
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
-
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.
-
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.
-
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.
-
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
Understanding Marshalling Cabinets in Industrial Control Systems Architecture
Industrial control system deployments rely on structured signal distribution to bridge field instrumentation with central processing hardware. A marshalling cabinet serves as the vital intermediate connection point between heavy field home-run multi-pair cables and delicate input/output (I/O) modules housed inside Programmable Logic Controller (PLC) or Distributed Control System (DCS) enclosures. By segregating field cable terminations from control hardware, engineers maintain system flexibility, safeguard controller components, and streamline commissioning workflows.
FAT vs SAT in Industrial Control Systems: Key Differences and Execution Guide
Industrial control system deployment relies on strict verification protocols to guarantee operational safety, system stability, and regulatory compliance. Commissioning complex Programmable Logic Controller (PLC) racks, Distributed Control Systems (DCS), and Safety Instrumented Systems (SIS) requires two critical milestones: the Factory Acceptance Test (FAT) and the Site Acceptance Test (SAT). Both procedures validate that system automation meets design specifications, but they occur at different stages of project execution and target distinct operational risks.
Hub vs Switch vs Router in Industrial Automation Architecture
Modern factory automation relies on reliable industrial networking infrastructure to exchange real-time field data across operational technology systems. Engineers often encounter networking hardware like hubs, switches, and routers when integrating Programmable Logic Controllers, Distributed Control Systems, and SCADA monitoring nodes. Although these devices share physical ports, they operate at different layers of the Open Systems Interconnection reference model and deliver distinct traffic management capabilities.