6ES7221-3BD30-0XB0 New Original Siemens S7-1200 Plc Programming Controller module

2. Key Selling Points

1. 8-Channel 24V DC Digital Input – Meets Common Signal Acquisition Needs:Provides 8 independent digital input channels for collecting signals from push buttons, emergency stops, proximity switches, photoelectric sensors, and limit switches.

2. Supports Sinking or Sourcing Input – Flexible Wiring:Can be configured for sinking (NPN) or sourcing (PNP) input mode by changing the connection of the M terminal, compatible with various sensor types.

3. Plug-and-Play Installation – Easy Setup:Mounts directly to the right of the CPU, powered via backplane bus, no external power required. Removable terminal blocks simplify wiring and maintenance.

4. Comprehensive LED Indicators – Clear Status Feedback:Each input channel has an LED indicator for real-time ON/OFF status display, facilitating on-site debugging and troubleshooting.

5. Seamless Integration with S7-200 SMART System:Module address is automatically assigned; input states (e.g., I2.0–I2.7) can be accessed directly in STEP 7-Micro/WIN SMART software without complex configuration.