Allen-Bradley 1785-L80C PLC-5/80C ControlNet Controller – PLC-5 Series
Imagine a high-throughput automotive assembly line or a continuous-process chemical plant suddenly losing its central controller. Conveyors halt, actuators freeze, safety interlocks trip, and every second of downtime translates directly into lost production and potential safety incidents. The Allen-Bradley 1785-L80C is the processor that prevents exactly this scenario — a high-capacity, ControlNet-native PLC-5 controller engineered to keep mission-critical industrial processes running without interruption.
Within the Allen-Bradley PLC-5 family, the 1785-L80C occupies the top tier of processing power and network capability. Designed for Phase 1.25 ControlNet architectures, it delivers deterministic, high-speed I/O scanning across large distributed control networks. Globally, the PLC-5 platform remains one of the most widely deployed legacy controller families in heavy industry, and the L80C variant is the preferred choice for facilities requiring maximum memory capacity, peer-to-peer messaging, and tight ControlNet integration — making it a cornerstone of installed bases across North America, Europe, and Asia-Pacific.
Technical Specifications
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Part Number / SKU: 1785-L80C
- Series: PLC-5
- Network Protocol: ControlNet (Phase 1.25)
- Product Type: Programmable Logic Controller (PLC) Processor
- Weight: 1,450 g (approx.)
- Compatible Software: RSLogix 5, RSLinx Classic
- Form Factor: Rack-mount processor module
Note: Additional electrical and I/O specifications are sourced from the official Rockwell Automation product documentation. We do not fabricate or estimate parameters not confirmed by the manufacturer.
Key Features & Benefits
- ControlNet Phase 1.25 Native: Deterministic, repeatable data transfer for time-critical control loops — no collisions, no jitter.
- High-Capacity Memory: The L80C designation indicates expanded user memory, supporting large ladder logic programs and extensive data tables for complex process control.
- Peer-to-Peer Messaging: Supports MSG instructions for controller-to-controller communication without host intervention, enabling distributed architectures.
- Broad I/O Compatibility: Works with the full range of 1771 I/O modules, protecting existing infrastructure investments.
- Proven Platform Longevity: PLC-5 systems remain operational in thousands of facilities worldwide; the L80C is a direct fit for brownfield upgrades and long-term maintenance programs.
- Rockwell Ecosystem Integration: Fully compatible with RSLogix 5 programming environment and RSLinx communication software.
Industry & Equipment Applications
- Automotive Manufacturing: Body-in-white welding lines, paint shop conveyors, powertrain assembly cells
- Oil & Gas: Pipeline SCADA systems, compressor station control, wellhead automation
- Chemical & Petrochemical: Batch reactor control, distillation column sequencing, safety instrumented systems (SIS) support
- Water & Wastewater: Pump station control, filtration process management, SCADA integration
- Food & Beverage: Filling line control, CIP (Clean-in-Place) sequencing, packaging automation
- Power Generation: Turbine auxiliary control, substation automation, load management
- Mining & Metals: Conveyor drive control, crusher sequencing, smelter process automation
System Integration & Compatible Parts
The 1785-L80C is designed to operate within the broader Allen-Bradley PLC-5 and ControlNet ecosystem. Compatible and commonly paired components include:
- Chassis: 1771-A1B, 1771-A2B, 1771-A3B, 1771-A4B series racks
- Power Supplies: 1771-P4S, 1771-P6S, 1771-P7
- ControlNet Media: 1786-RPA, 1786-RPCD coaxial repeaters; 1786-TPS, 1786-TPR taps
- I/O Modules: Full 1771 I/O family (digital, analog, specialty)
- Communication Bridges: 1785-CHBM, 1785-KA5 for DH+ and remote I/O integration
- Programming Interface: 1784-PCICS, 1784-U2CN USB-to-ControlNet adapters
If you need assistance identifying compatible components for your existing system architecture, our engineering team is available to advise. Contact us for a compatibility consultation.
Our Quality Assurance Process
At Konmask.com, every Allen-Bradley 1785-L80C unit we supply undergoes a structured verification process before shipment:
- Source Verification: Units are sourced from authorized distributors, certified surplus dealers, or directly from decommissioned OEM installations with documented provenance.
- Visual & Physical Inspection: Each module is inspected for physical damage, connector integrity, label authenticity, and firmware revision markings.
- Functional Testing: Where applicable, modules are bench-tested using RSLogix 5 and RSLinx to verify processor boot, memory integrity, and ControlNet port functionality.
- Packaging: Anti-static packaging with desiccant, foam cushioning, and tamper-evident sealing for safe international transit.
- Documentation: Test reports and inspection records available upon request for quality-critical procurement.
How to Order
- Submit an Inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quote: Our team will respond within 1 business day with pricing, availability, and lead time.
- Confirm & Pay: We accept T/T (bank transfer), PayPal, and other B2B payment methods. Proforma invoice provided upon order confirmation.
- Shipment & Tracking: Orders are shipped via DHL, FedEx, or UPS Express with full tracking. Export documentation (commercial invoice, packing list) included.
- After-Sales Support: Our technical team remains available post-delivery for integration questions or warranty claims.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC, DCS, HMI, and industrial drive components — not a generalist marketplace.
- Global Sourcing Network: Access to surplus, refurbished, and new-old-stock (NOS) inventory from verified suppliers across North America, Europe, and Asia.
- Technical Expertise: Our team includes engineers with hands-on experience in Rockwell, Siemens, ABB, and Schneider automation systems.
- Fast Response: Inquiry-to-quote in under 24 hours. Urgent requirements handled with priority sourcing.
- Transparent Documentation: Full traceability records, test reports, and export compliance documentation provided on request.
- Long-Term Partnership: We support MRO (Maintenance, Repair & Operations) buyers, system integrators, and OEMs with ongoing supply agreements.
Frequently Asked Questions
Q: Is the Allen-Bradley 1785-L80C still in production?
A: The PLC-5 series has been discontinued by Rockwell Automation. However, the 1785-L80C remains widely available as surplus and refurbished stock. Konmask.com specializes in sourcing these legacy components to support ongoing maintenance and brownfield projects.
Q: What is the difference between the 1785-L80C and other PLC-5 processors like the 1785-L40C or 1785-L60C?
A: The primary differentiator is memory capacity and I/O addressing range. The L80C offers the highest user memory in the ControlNet PLC-5 sub-family, making it suitable for the most complex and data-intensive applications. The L40C and L60C are appropriate for mid-range applications.
Q: Can the 1785-L80C communicate with newer ControlLogix or CompactLogix systems?
A: Yes, via ControlNet bridging or EtherNet/IP gateways. Rockwell’s 1756-CNB or third-party protocol converters can facilitate communication between PLC-5 ControlNet networks and newer Logix platforms during phased migration projects.
Q: What programming software is required?
A: RSLogix 5 (now available as RSLogix 5 Classic under the FactoryTalk portfolio) is the required programming environment. RSLinx Classic is used for device communication and configuration.
Q: Do you provide a warranty on the 1785-L80C?
A: Yes. We offer a standard 90-day functional warranty on all tested units. Extended warranty options are available for volume orders. Please contact us for details.
Q: Can you source multiple units for a plant-wide spare parts program?
A: Absolutely. We regularly fulfill bulk orders for MRO spare parts programs. Contact us with your quantity requirements and we will provide a volume pricing proposal.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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