B&R Support PLC Modules：

The following is a detailed description of several specific model modules in the B&R X20 series:

1. X20 DIF 371

Module type: Digital input filtering module
Function description: This module is used for filtering digital input signals, which can effectively suppress noise and interference in the input signal, improve signal stability and reliability.
By using filtering function, it is possible to avoid misoperation caused by signal jitter or noise, ensuring the normal operation of the control system in complex environments.
Application scenarios: Suitable for applications that require high-precision and high stability digital input, such as industrial automation production lines, mechanical equipment control, etc.

2. X20 DOF 322

Module type: Digital output filtering module
Function description: This module is used for filtering digital output signals to ensure the stability and accuracy of the output signals.
Through the filtering function, the output signal can be smoothed, reducing equipment vibration or damage caused by signal mutations, and improving the operational efficiency and lifespan of the equipment.
Application scenarios: Suitable for situations where control of actuators (such as motors, valves, etc.) is required to ensure the stability and reliability of output signals.

3. X20 DI 9371

Module type: Digital input module
Function description: This module is used to receive external digital input signals, such as switch signals, sensor signals, etc.
Provide multiple input channels, support multiple input voltage ranges, and facilitate connection with different types of sensors or switches.
Application scenarios: Widely used in industrial automation control systems to monitor the operating status, position, speed, and other parameters of equipment.

4. X20 BR 9300

Module type: Bus coupler module
Function description: This module serves as the interface between PLC (Programmable Logic Controller) and fieldbus, enabling data transmission and communication.
Supports multiple fieldbus protocols, such as PROFIBUS, CANopen, etc., making it convenient to connect with different types of devices or systems.
Provide high-speed and stable data transmission capability to ensure the real-time and reliability of the control system.
Application scenarios: Suitable for applications that require distributed control, such as large-scale industrial automation production lines, intelligent building systems, etc.

5. X20 PS 9400

Module type: power module
Function description: This module provides a stable and reliable power supply for the entire control system.
Support a wide voltage input range to adapt to voltage fluctuations in different regions of the power grid.
Provide protection functions such as overcurrent, overvoltage, and short circuit to ensure the safe operation of the control system.
Application scenarios: Widely used in various industrial automation control systems, providing power support for devices such as PLCs, I/O modules, sensors, etc.

Summarize

X20 DIF 371 and X20 DOF 322 are used for filtering digital input and output, respectively, to improve signal stability and reliability.
X20 DI 9371 is a digital input module used to receive external digital input signals.
X20 BR 9300 is a bus coupler module that enables data transmission and communication between PLC and fieldbus.
X20 PS 9400 is a power module that provides stable and reliable power supply for the entire control system.
These modules play an important role in the B&R X20 series, collectively forming an efficient and stable industrial automation control system.