Catalog Number:

1775-SR

Capacity:

Max 4,096 I/O points across 4 channels

Product Series:

PLC-3 Series (PLC-3/10 Subsystem)

Port Configuration

4 I/O Channels or 3 I/O + 1 RS-232-C

Backplane Power:

+5V DC(6.0 A max) / ±15V DC(20 mA)

Operating Temp:

0℃ to 60℃

The Allen-Bradley 1775-SR is a legacy high-speed communication module required specifically to manage input and output distribution for the PLC-3/10 programmable logic controller system. Occupying a single chassis slot within a 1775-A3 processor chassis, this module functions as the vital link between the central processor and Allen-Bradley's 1771 Universal I/O System. It is equipped with four independent communication channels capable of scanning up to 2,048 remote inputs and 2,048 remote outputs across a maximum of 16 connected I/O chassis per channel. Additionally, the module natively accommodates an RS-232-C port (Channel 5) to host industrial programming terminals for managing on-line ladder diagram configurations, executing localized user diagnostics, and establishing peer-to-peer data links with secondary backup processors.

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Industrial PC (IPC)

Distributed control system (DCS)

Human-machine interface

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