1785-L80C Series Allen-Bradley PLC-5/80C ControlNet Processor
Manufacturer: Allen-Bradley
Product No.: 1785-L80C
Condition： In stock
Product Type: Processor Module
Product Origin: USA
Payment: T/T, Western Union
Weight: 150g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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Engineering Architecture & System Matrix
The 1785-L80C controller engineered by Allen-Bradley is a high-capacity ControlNet Processor Module belonging to the legacy PLC-5 Series. This flagship automation controller combines heavy-duty logic processing with native ControlNet networking to direct complex industrial machinery and distributed I/O racks.
- Catalog Number: 1785-L80C (Processor Model: PLC-5/80C)
- Manufacturer & Brand: Rockwell Automation / Allen-Bradley
- Module Type: ControlNet Programmable Automation Controller
- User Memory Capacity: 100 Kilowords of static RAM backed by battery backup
- Memory Backup Options: Compatible with 1785-ME32, 1785-ME64, and 1785-M100 EEPROM modules
- Chassis Backplane Power Draw: 3.3A at 5V DC
Technical Specifications & Performance Metrics
| Performance Parameter | Engineering Specification |
|---|---|
| Maximum I/O Capacity | 3,072 total I/O (any mix) or 3,072 inputs + 3,072 outputs (complementary) |
| Program Execution Speed | 0.5 ms per K word (bit logic); 2.0 ms per K word (word/math logic) |
| ControlNet Network Port | RJ-45 Network Access Port (NAP) with 5 Mbit/s transfer rate and 2–100ms update time |
| Network Node & Distance Limits | 99 max nodes with repeaters; 1000m link length (2 nodes); up to 6000m with repeaters |
| Communication Ports | DH+, Remote I/O, and RS-232-C/422-A/423-A serial ports (57.6k to 230.4 kbit/s rates) |
| Thermal & Power Dissipation | 59 BTU/hour max heat dissipation; 0°C to 60°C operating temperature envelope |
| Environmental Ruggedness | Withstands 2G operational vibration (10–500Hz) and 30G operational shock |
| Enclosure & Physical Weight | Open enclosure style; Weight approximately 3.0 lbs (1.36 kg) |
Industrial Applications & Rotary Machinery
- Large Continuous Process Plants: Coordinates high-node-count distributed control networks across petroleum refineries and chemical facilities.
- Heavy Manufacturing Production Lines: Manages large-scale discrete I/O matrices (up to 3,072 points) across multi-chassis plant floors.
- High-Speed Variable Drive Integration: Interfacing seamlessly with industrial variable speed drives and HMI workstations via ControlNet.
Diagnostic Capabilities & System Health Tracking
- Internal Real-Time Clock/Calendar: Maintains precise time-stamping with ±5 minutes per month accuracy variation at 60°C.
- Battery Voltage Supervision: Dedicated low-battery monitoring triggers front-panel indicators before static RAM data degradation occurs.
- Hot Backup Redundancy Support: Integrates with the 1785-CHBM ControlNet hot backup cartridge to ensure zero-loss plant controller failover.
Global PLC Spare HUB's Insight
Maintaining legacy PLC-5 architectures requires careful management of backplane power budgeting and memory backup hardware. The 1785-L80C demands a substantial 3.3A from the 5V DC chassis backplane, meaning power supply loading must be verified when populating 1771 I/O racks. For high-availability applications, field engineers should deploy the 1785-CHBM hot backup module alongside an appropriate EEPROM memory backup card (such as the 1785-M100) to protect against prolonged power loss or processor failure. When configuring ControlNet node drops, ensure coaxial cable lengths and repeater limits strictly adhere to physical layer specifications to prevent packet drops on high-speed deterministic loops.
Logistics, Packaging & Warranty Terms
- Condition Status: 100% New & Original factory-sealed hardware.
- Warranty Coverage: Comprehensive 12 Months factory warranty from date of purchase.
- Order Handling: Rapid 24 to 48 hour processing and dispatch window.
- Global Express Shipping: Fast, secure air delivery worldwide via FedEx, UPS, and DHL.
Frequently Asked Questions
How does the ControlNet hot backup cartridge (1785-CHBM) function with this controller?
The 1785-CHBM module synchronizes primary and secondary PLC-5/80C processors in real time, allowing automatic, bumpless switchover of control loops if the primary controller faults.
What battery module is required to maintain static RAM memory during power outages?
The controller relies on the 1770-XYC battery module to maintain user memory programs and data tables inside the battery-backed static RAM during extended shutdowns.
Can the 1785-L80C address I/O modules using fractional-slot addressing modes?
Yes, the controller fully supports 2-slot, 1-slot, and ½-slot addressing modes to accommodate legacy 1771 8-point, 16-point, and 32-point I/O modules.
What is the maximum scan time overhead introduced by ControlNet network communications?
Network update times are user-selectable between 2 ms and 100 ms, allowing engineers to balance determinism against scan execution overhead depending on process criticality.
Why is EEPROM program backup recommended alongside battery-backed RAM?
Installing an optional EEPROM module (such as the 1785-M100) provides non-volatile program storage, preventing total program loss if the backup battery discharges completely over time.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
Q: Can I get a formal quotation with shipping costs?
A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
Need Technical Assistance?Not sure if this part is compatible with your system? [Consult our Engineers] before purchasing to ensure 100% compatibility.
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