Technical Summary
| Product type designation | SM 1221, DI 16×24 V DC |
|---|---|
| Based on | 6ES7221-1BH32-0XB0 |
| Number of digital inputs | 16 |
| Supply voltage, rated value (DC) | 24 V |
| Supply voltage, permissible range, lower limit (DC) | 20.4 V |
| Supply voltage, permissible range, upper limit (DC) | 28.8 V |
| Input current from backplane bus 5 V DC, max. | 130 mA |
| Power loss, typ. | 2.5 W |
| Required front connector | Yes |
Applications
Digital input signal acquisition
Connection of 16 digital input signals at 24 V DC.
Key Features
SIPLUS S7-1200 digital input module
SM 1221, DI 16×24 V DC for the S7-1200 family.
Conformal coating
Designed with conformal coating for the ruggedized SIPLUS variant.
Active Product lifecycle
Listed as Active Product.
Operating temperature range
-40…+70 °C with start up -25 °C.
Input configuration
16 digital inputs, 24 V DC, sink/source.
Frequently Asked Questions
What is Siemens 6AG1221-1BH32-2XB0?
It is a SIPLUS S7-1200 SM 1221 digital input module.
How many digital inputs does 6AG1221-1BH32-2XB0 have?
It has 16 digital inputs.
What is the supply voltage for 6AG1221-1BH32-2XB0?
The rated supply voltage is 24 V DC, with a permissible range of 20.4 V to 28.8 V.
What are the key environmental details for this SIPLUS module?
It has conformal coating, an operating temperature range of -40…+70 °C, and a start up temperature of -25 °C.
