Allen-Bradley 1753-IB20XOB8 GuardPLC Digital Combo Module

Allen-Bradley 1753-IB20XOB8 GuardPLC Digital Input/Output Combination Module is a 28-channel GuardPLC I/O card that provides 20 digital inputs and 8 digital outputs, all 24 V DC safety-rated. The module integrates a GuardPLC 100 Mbps Ethernet interface, enabling high-speed communication with GuardPLC controllers across the safety network. This 20DI/8DO configuration supports compact wiring for safety sensors and actuators in distributed safety architectures, including emergency stops, door interlocks, safety gates, and other safety devices, while letting the controller monitor input states and drive safety outputs in a synchronized fashion. The combination module simplifies panel layout by consolidating inputs and outputs onto a single card, reducing the need for separate I/O blocks and enabling easier fault isolation. It is designed for use with Rockwell Automation GuardPLC safety systems and is intended to be deployed where reliable, safety-rated digital I/O is required in automated machinery. In operation, the 1753-IB20XOB8 communicates with GuardPLC controllers over the built-in Ethernet interface, supporting scalable safety solutions from small machines to larger line configurations.