| Brand | Allen-Bradley |
| Status | Discontinued by Manufacturer |
| Protocol | Remote I/O (RIO) |
| Baud Rates | 57.6 Kbaud (up to 10,000 ft cable), 115.2 Kbaud (up to 5,000 ft cable) |
| Module Type | Direct Communications Module |
| Part Number | 1771-DCM |
| Manufacturer | Rockwell Automation |
| Compatibility | Allen-Bradley PLC-5 Systems |
| Data Transfer | Discrete: 7 words + 1 status word; Block: 66 words + 1 status word |
| Backplane Current Draw | 1.2 Amperes |
Does the Allen-Bradley 1771-DCM come with a warranty?
Yes. The 1771-DCM 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 1771-DCM a genuine Allen-Bradley part?
The 1771-DCM 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 1771-DCM new or used?
We offer the 1771-DCM 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 are the key ratings of the 1771-DCM?
The 1771-DCM communicates over Remote I/O (RIO) and draws 1.2 Amperes.
What is the Allen-Bradley 1771-DCM?
The 1771-DCM is an Allen-Bradley PLC-5 Direct Communications Module.
1771-DCM
The Allen-Bradley 1771-DCM is a Direct Communications Module designed to facilitate direct data exchange between supervisory and local processors using a serial interface. Supporting the Remote I/O (RIO) protocol, it handles discrete data transfers of up to 7 words plus 1 status word and block transfers of up to 66 words plus 1 status word. The module operates at baud rates of 57.6 Kbaud for cable lengths up to 10,000 feet and 115.2 Kbaud for lengths up to 5,000 feet. It draws 1.2 Amperes from the backplane and integrates into the Allen-Bradley PLC-5 system.
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
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