Allen-Bradley 1785-L80E/E PLC-5/80E Ethernet Processor Module
$123.00
$320.00
Description
Allen-Bradley 1785-L80E/E PLC-5/80E Ethernet Processor Module
Configured for high-density control execution in Allen-Bradley 1771 I/O chassis platforms, the Allen-Bradley 1785-L80E/E (1785-L80E Ethernet Processor Module) provides direct physical/electrical execution. The module manages up to 3,072 I/O points across 93 total chassis locations and features integrated EtherNet/IP, Data Highway Plus (DH+), Remote I/O (RIO), and RS-232/422/423 serial channels. Memory capacity supports up to 100K words of battery-backed static RAM for complex ladder logic routines.
Suffix Breakdown & Model Matrix
| Catalog Suffix | Feature Description |
|---|---|
| 1785-L80E | Base Catalog Number for PLC-5/80E Ethernet Controller |
| Series / Revision /E | Hardware Revision Level E indicating specific PCB component revisions and firmware flash compatibility |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1785-L80E/E |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 1.4 kg |
| Dimensions | 51 mm x 279 mm x 191 mm (2.0 in x 11.0 in x 7.5 in) |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | ~65 BTU/hour heat dissipation (~3.6 A @ 5 VDC backplane current load) |
| User Memory | 100K words (fixed, battery-backed) |
| Max I/O Capacity | 3,072 digital/analog points |
| Communication Ports | EtherNet/IP (10/100 Mbps), DH+, Remote I/O, RS-232/422/423 |
| Max Chassis Racks | Up to 24 local, 93 total chassis |
| I/O Scan Time | Minimum 0.5 ms (local I/O) |
| Battery Backup | 1770-XYC or 1785-BAT |
| Certifications | UL, CE, CSA, C-TICK |
Industrial Control & Network Performance
The 1785-L80E/E leverages backplane bus communication velocity to process large volumes of 1771 I/O image tables without introducing scan latencies. Dedicated hardware execution allows EtherNet/IP deterministic networks to coexist with legacy DH+ token-ring topologies, maintaining time-synchronized messaging across legacy and modernized control layers. firmware flash compatibility ensures stable operational execution under high I/O density scaling and intense interrupt-driven routine execution.
Frequently Asked Questions
Q: What are the backplane power supply considerations when installing the 1785-L80E/E into a 1771 chassis?
A: The processor draws approximately 3.6 A at 5 VDC directly from the 1771 backplane power supply. System power sizing must account for this draw alongside the total current requirements of all installed local I/O modules to prevent voltage drops.
Q: Can the 1785-L80E/E processor be removed or inserted under power?
A: No. The 1771 chassis architecture does not support Removal and Insertion Under Power (RIUP). Power to the local 1771 chassis must be completely isolated prior to inserting or extracting the processor module to avoid hardware damage or unintended control behavior.
Field Installation Guidelines
- Chassis Mounting & Slot Location: Insert the 1785-L80E/E into the leftmost slot (Slot 0) of the 1771 I/O chassis. Ensure the module card guides align correctly with the top and bottom chassis tracks before fully seating the backplane edge connector.
- Grounding & Shielding Limits: Connect the 1771 chassis ground lug to the main system earth ground using a minimum 14 AWG copper wire. Shielded communication cables (such as Belden 9463 for DH+ and shielded Cat5e for EtherNet/IP) must have their drain wires grounded at one end only to eliminate ground loop current interference.
- Cable Routing Precautions: Route low-voltage communications cables and AC power wiring in separate conduits or raceways. Maintain a minimum clearance of 200 mm between communication lines and high-current power cables or variable frequency drive outputs to suppress electromagnetic noise coupling.
- Battery Battery Installation: Verify that the 1770-XYC or 1785-BAT lithium battery is securely connected to the front-panel connector before applying power to guarantee user memory retention during power cycles.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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