Allen-Bradley 1775-SR PLC-3 I/O Scanner Module
The 1775-SR is a single-slot I/O scanner module engineered by Allen-Bradley for the PLC-3 control system architecture. Designed to manage high-density field signal processing, this module handles up to 2,048 discrete inputs and 2,048 discrete outputs across four dedicated terminal channels. It features selectable I/O communication speeds of 57.6 or 115.2 kbaud, enabling fast and deterministic data exchange between local processor logic and remote station chassis.
Serial Interface and Configuration
System commissioning and serial diagnostics on the 1775-SR are handled via an integrated 25-pin D-shell connector compatible with RS-232-C signal standards. This interface allows technicians to connect terminal devices or programming tools directly to the scanner for configuration updates and link verification.
System Diagnostics and Environmental Tolerances
An onboard self-test indicator provides immediate visual feedback on module status, assisting maintenance staff during power-up routines and routine fault isolation. Built for demanding industrial operations, the module operates reliably between 0 °C and 40 °C in non-condensing relative humidity levels from 5% to 95%, with a storage temperature tolerance spanning -40 °C to 85 °C.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1775-SR |
| Brand | Allen-Bradley |
| Product Type | PLC I/O Scanner Modules |
| Product Family | PLC-3 |
| Input Capacity | 2048 Inputs |
| Output Capacity | 2048 Outputs |
| Terminal Channels | 4 Terminals |
| Communication Rate | 57.6 kbaud or 115.2 kbaud |
| Configuration Interface | 25-pin D-Shell (RS-232-C) |
| Diagnostic Indicator | Onboard Self-Test Indicator |
| Operating Temperature | 0 deg C to 40 deg C |
| Storage Temperature | -40 deg C to 85 deg C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Shipping Weight | 5.00 lbs (2.27 kg) |
Frequently Asked Questions
Q: What input and output capacity does the Allen-Bradley 1775-SR support? A: The 1775-SR manages up to 2,048 discrete inputs and 2,048 discrete outputs across its four terminal channels.
Q: What connector type is used for serial configuration on the 1775-SR? A: It uses a 25-pin D-shell connector supporting RS-232-C communication protocols for serial diagnostics and parameter configuration.
Q: What are the supported I/O channel communication rates for this module? A: The module supports I/O communication rates of either 57.6 kbaud or 115.2 kbaud.
Allen-Bradley 1775-SR PLC-3 I/O Scanner Module
Allen-Bradley 1775-SR PLC-3 I/O Scanner Module
The 1775-SR is a single-slot I/O scanner module engineered by Allen-Bradley for the PLC-3 control system architecture. Designed to manage high-density field signal processing, this module handles up to 2,048 discrete inputs and 2,048 discrete outputs across four dedicated terminal channels. It features selectable I/O communication speeds of 57.6 or 115.2 kbaud, enabling fast and deterministic data exchange between local processor logic and remote station chassis.
Serial Interface and Configuration
System commissioning and serial diagnostics on the 1775-SR are handled via an integrated 25-pin D-shell connector compatible with RS-232-C signal standards. This interface allows technicians to connect terminal devices or programming tools directly to the scanner for configuration updates and link verification.
System Diagnostics and Environmental Tolerances
An onboard self-test indicator provides immediate visual feedback on module status, assisting maintenance staff during power-up routines and routine fault isolation. Built for demanding industrial operations, the module operates reliably between 0 °C and 40 °C in non-condensing relative humidity levels from 5% to 95%, with a storage temperature tolerance spanning -40 °C to 85 °C.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1775-SR |
| Brand | Allen-Bradley |
| Product Type | PLC I/O Scanner Modules |
| Product Family | PLC-3 |
| Input Capacity | 2048 Inputs |
| Output Capacity | 2048 Outputs |
| Terminal Channels | 4 Terminals |
| Communication Rate | 57.6 kbaud or 115.2 kbaud |
| Configuration Interface | 25-pin D-Shell (RS-232-C) |
| Diagnostic Indicator | Onboard Self-Test Indicator |
| Operating Temperature | 0 deg C to 40 deg C |
| Storage Temperature | -40 deg C to 85 deg C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Shipping Weight | 5.00 lbs (2.27 kg) |
Frequently Asked Questions
Q: What input and output capacity does the Allen-Bradley 1775-SR support? A: The 1775-SR manages up to 2,048 discrete inputs and 2,048 discrete outputs across its four terminal channels.
Q: What connector type is used for serial configuration on the 1775-SR? A: It uses a 25-pin D-shell connector supporting RS-232-C communication protocols for serial diagnostics and parameter configuration.
Q: What are the supported I/O channel communication rates for this module? A: The module supports I/O communication rates of either 57.6 kbaud or 115.2 kbaud.
