Key Features
- 8 digital inputs: SM 1221, DI 8×24 V DC with 8 digital inputs.
- 24 V DC input supply: Rated value (DC): 24 V; permissible range: 20.4 V to 28.8 V.
- Conformal coating: SIPLUS version with conformal coating for the module.
- Input diagnostics: Diagnostics function, diagnostic alarm, and input status LED are supported.
- Front connector required: Required front connector: Yes.
- Compact module dimensions: Width 45 mm, height 100 mm, depth 75 mm.
Technical Summary
| Product type designation | SM 1221, DI 8×24 V DC |
|---|---|
| Based on | 6ES7221-1BF32-0XB0 |
| Rated value (DC) | 24 V |
| Permissible range, lower limit (DC) | 20.4 V |
| Permissible range, upper limit (DC) | 28.8 V |
| Number of digital inputs | 8 |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| Power loss, typ. | 1.5 W |
| Input current from backplane bus 5 V DC, max. | 105 mA |
Applications
- Digital input acquisition: Connection for 8 digital input signals at 24 V DC.
- Interrupt input monitoring: Parameterizable interrupt inputs with diagnostics and input status indication.
Frequently Asked Questions
What is Siemens 6AG1221-1BF32-4XB0?
It is a SIPLUS S7-1200 SM 1221 digital input module, DI 8×24 V DC.
How many digital inputs does 6AG1221-1BF32-4XB0 have?
It has 8 digital inputs.
What is the input voltage for 6AG1221-1BF32-4XB0?
Rated input voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
Does 6AG1221-1BF32-4XB0 support diagnostics?
Yes. Diagnostics function, diagnostic alarm, and input status LED are supported.
What should be confirmed before ordering 6AG1221-1BF32-4XB0?
Confirm the exact model, quantity, destination, stock conditions, and dispatch requirements before ordering.
