Technical Summary
| Product type designation | SM 1221, DI 8×24 V DC |
|---|---|
| Product lifecycle | Active Product |
| Digital inputs | 8 |
| Input voltage | 24 V DC |
| Supply voltage | 24 V |
| Supply voltage range | 20.4 V to 28.8 V DC |
| Power loss, typ. | 1.5 W |
| Input current from load voltage L+ (without load), max. | 4 mA; per channel |
| Input characteristic curve in accordance with IEC 61131, type 1 | Yes |
| IP degree of protection | IP20 |
Applications
24 V DC digital input acquisition
Digital input acquisition for SIMATIC S7-1200 controllers using 24 V DC signals.
Key Features
SM 1221 digital input module
Digital input module for SIMATIC S7-1200.
8 digital inputs
Provides 8 DI.
24 V DC input rating
Designed for 24 V DC.
Sink/Source input design
Sink/Source configuration for the digital inputs.
Active Product lifecycle
Product lifecycle status: Active Product.
Frequently Asked Questions
What is Siemens 6ES7221-1BF32-0XB0?
It is an SM 1221 digital input module for SIMATIC S7-1200.
How many digital inputs does 6ES7221-1BF32-0XB0 have?
It has 8 digital inputs.
What is the input voltage for 6ES7221-1BF32-0XB0?
The input voltage is 24 V DC.
What is the product lifecycle status of 6ES7221-1BF32-0XB0?
Product lifecycle: Active Product.
