Product Description:

B&R Automation’s System 2003 Controllers series includes the 7CX408.50-1 remote I/O controller. Designed for cabinet installation, the module provides discrete and encoder interfaces so that a central PLC can monitor field devices over a CAN bus. It operates as a slave node in distributed architectures and translates onboard digital signals to the higher-level control network, supporting packaging, material-handling, and general machine automation tasks where deterministic scan times are required. The combination of local I/O handling and networked communication allows one compact module to gather switch states, pulse signals, and actuator commands in the same control segment.

The communication backbone is a 500 kBit/s CAN segment, and the module appears on that network as 1 x CAN I/O Slave. On the local side, it offers 16 digital inputs that accept sink-type signals. These inputs are intended for common industrial sensors and switches, with operating thresholds arranged so state changes can be recognized clearly under normal control voltages. Output capacity mirrors the input count with 16 digital outputs, and the field side is powered from the controller’s 24 VDC supply. Two event counters capture fast edge sequences, while a single incremental encoder channel supports position feedback for low-resolution axes, and two PWM channels are available for duty-cycle-controlled actuators.

The output drivers can source up to 10.0 A in total, so connected loads must remain within the combined current limit of the module. Internal electronics draw only 1.6 W, which helps keep cabinet heat generation low during continuous operation. A debouncing filter no longer than 2 ms allows legitimate high-frequency pulses to pass to the counters without letting contact bounce interfere with signal quality. The housing is rated IP20, so the controller should be installed inside a closed electrical enclosure with limited dust exposure and no direct moisture.