Technical Detail: 6ES7221-1BF32-0XB0
The Siemens 6ES7221-1BF32-0XB0 is a **Digital Input Module (SM 1221)** for the SIMATIC S7-1200 PLC family. It expands the controller’s capacity by adding **8 Digital Inputs** (24 V DC).
Specifications
- Inputs: 8 DI (Sink/Source).
- Voltage: 24 V DC.
- Input Delay: Configurable (0.2 to 12.8 ms).
- Isolation: Yes (Optocoupler).
Usage
This module clips onto the right side of any S7-1200 CPU. It is essential when the onboard inputs of the CPU are insufficient for the project. The **6ES7221-1BF32-0XB0** supports high-speed counters and interrupt inputs, making it versatile for packaging and assembly machines.
