| Brand | Allen-Bradley |
| Series | PLC-5 |
| Battery | 1770-XY |
| DH+ Channel | Yes |
| Module Type | Processor |
| User Memory | 6K words SRAM (expandable to 14K) |
| Max Analog I/O | 3072 |
| Memory Modules | 1785-MR (4K RAM), 1785-MS (8K RAM), 1785-MJ (8K EEPROM) |
| Addressing Modes | ½-slot, 1-slot, 2-slot |
| Remote I/O Channel | Yes |
| Total I/O Capacity | 3072 points |
| Analog I/O Capacity | 512 points |
| Communication Ports | 1 DH+, 1 RS-232-C/422-A/423-A |
| Supported Local I/O | Up to 4 racks (1 resident) |
| Supported Remote I/O | Up to 3 remote I/O racks |
| Max I/O Chassis (Total) | 93 |
| Part Number/Catalog No. | 1785-LT |
| Control Coprocessor Port | Yes |
| I/O Capacity (Inputs/Outputs) | 512 inputs, 512 outputs |
| Max I/O Chassis (Universal Remote) | 32 per I/O link |
Does the Allen-Bradley 1785-LT come with a warranty?
Yes. The 1785-LT 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-LT a genuine Allen-Bradley part?
The 1785-LT 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-LT new or used?
We offer the 1785-LT 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-LT?
The 1785-LT is an Allen-Bradley PLC-5 Processor.
How fast does the 1785-LT ship?
In-stock orders for the 1785-LT 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-LT
The Allen-Bradley 1785-LT is a PLC-5 processor designed for scalable control in mid-size to complex automation systems. It supports up to 4 local racks (1 resident, 3 additional) and 3 remote I/O racks, with a total capacity of 3072 I/O points. The module comes with 6K words of SRAM memory, expandable to 14K via optional memory modules including the 1785-MR, 1785-MS, and 1785-MJ EEPROM. It offers reliable performance with scan times of 2 ms per 1,000 words for bit logic and 8 ms for typical programs. Integrated communication includes one DH+ channel and a standalone I/O scanner/adapter. Ideal for legacy systems requiring dependable control.
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.
