| Brand | Allen-Bradley |
| Series | PLC-5/80C |
| Module Type | ControlNet PLC-5 Processor |
| User Memory | 100K Words (Battery-Backed SRAM) |
| Manufacturer | Rockwell Automation |
| Protected Memory | No |
| Max I/O Chassis (Total) | 125 |
| Part Number/Catalog No. | 1785-L80C15 |
| Max Total I/O (Forcible) | 3072 (any mix) or 3072 in + 3072 out |
| Max Analog I/O (Forcible) | 3072 |
| Serial Communication Port | 1 RS-232-C / 422-A / 423-A |
| Max Total I/O (Nonforcible) | 50,176 points |
| I/O Scan Time – ControlNet | 0.5 ms average |
| I/O Scan Time – Remote I/O | 10 ms @ 57.6 kbps, 7 ms @ 115.2 kbps, 3 ms @ 230.4 Mbps |
| Max Analog I/O (Nonforcible) | 50,176 |
| Max I/O Chassis (Extended Local) | 0 |
| Control Coprocessor Expansion Port | Yes |
| Max I/O Chassis (Universal Remote) | 60 |
Does the Allen-Bradley 1785-L80C15 come with a warranty?
Yes. The 1785-L80C15 is backed by our 24-Month Replace Industrial Warranty, with no rush fees or hidden warranty charges. If a unit fails under normal use within the warranty period, we repair or replace it.
Is this 1785-L80C15 a genuine Allen-Bradley part?
The 1785-L80C15 is sourced and verified independently. Replace Industrial, LLC is not a Rockwell Automation Authorized Distributor, and all warranties are provided directly by Replace Industrial.
Is the Allen-Bradley 1785-L80C15 new or used?
We offer the 1785-L80C15 in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.
What is the Allen-Bradley 1785-L80C15?
The 1785-L80C15 is an Allen-Bradley PLC-5 ControlNet PLC-5 Processor.
How fast does the 1785-L80C15 ship?
In-stock orders for the 1785-L80C15 ship the same day when placed before our daily cutoff. Expedited and same-day air options are available if you are facing downtime, with no rush fees. Our team is based in Raleigh, North Carolina.
1785-L80C15
The Allen-Bradley 1785-L80C15 is a high-capacity ControlNet-enabled processor from the PLC-5/80C family, designed for distributed control in advanced industrial automation systems. Equipped with 100K words of battery-backed static RAM, this processor supports up to 30,720 forcible I/O points or up to 50,176 nonforcible I/O points, making it ideal for complex I/O-heavy applications. The 1785-L80C15 provides fast I/O scan rates, averaging 0.5 milliseconds over ControlNet and supporting universal remote I/O at various baud rates. It includes one RS-232-C/422-A/423-A port, and features a control coprocessor expansion port for added system flexibility. This module supports up to 125 I/O chassis and is purpose-built for scalable, high-performance environments.
All products are covered by our 2-Year (24-Month) Replace Industrial Warranty. If a unit is found defective under normal use within the warranty period, we repair or replace it at no additional cost, and a unit may be returned for a full refund within 30 days if returned in the same condition it was sent.
Replace Industrial is an independent distributor and does not convey the manufacturer's warranty; all warranties are provided by Replace Industrial alone. Read the full warranty policy
We repair a wide range of industrial automation equipment, including PLCs, HMIs, drives, servo motors, switches, and circuit breakers, with rush service for critical downtime. Request a quote, ship your unit, and we diagnose, repair, and return it. Request a repair quote
Our standard shipping method is UPS Ground. We can also ship on your FEDEX or DHL account.
We can ship many items our the same day via Overnight or 2 Day Shipping.
We currently only collect tax from customers in the state of North Carolina. If you are exempt on your purchase, please email your Sales Tax & Use Exemption Form to sales@replacenc.com.
If you are checking out via a quote we send you, there is an option to upload your form at the time of purchase.
If you have already placed an order, please send us your form and we can refund the charged taxes.










