Siemens
Siemens SIMATIC S7-1200 Digital Input SM 1221 Module
Siemens SIMATIC S7-1200 Digital Input SM 1221, 8 DI, 24V DC
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12-Mo Warranty
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🎖 Veteran-Owned
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12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
8 Digital Inputs
24V DC Operation
Sink and Source Configuration
For S7-1200 PLC
High Density I/O
Robust Siemens Engineering
Product description
The Siemens 6ES7221-1BF32-0XB0 is a digital input signal module for the SIMATIC S7-1200 series. It provides 8 digital inputs that operate at 24V DC and are configurable for both sinking and sourcing input types.
This SM 1221 module is designed for various industrial control applications within the S7-1200 platform, enabling reliable data acquisition from sensors and switches in diverse environments.
Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the 6ES7221-1BF32-0XB0 to help maintain and expand your Siemens S7-1200 automation systems.
Technical specifications
| Type | Digital Input Module |
| Series | SIMATIC S7-1200 |
| Model | SM 1221 |
| Inputs | 8 DI |
| Voltage | 24 V DC |
| Configuration | Sink/Source |
Common applications
Industrial Control
Automation Systems
Machine Building
Process Automation
Data Acquisition
Factory Automation
Compatible systems
SIMATIC S7-1200 CPUs
Also known as
Siemens SM1221
S7-1200 DI Module
6ES72211BF320XB0
Replaces / compatible with
This SM 1221 module expands the digital input capabilities of the Siemens S7-1200 PLC. It is compatible with various S7-1200 CPUs.
Technical note
Expert tip
The SM 1221 module requires an S7-1200 CPU and a suitable power supply to operate correctly.What happens next?
1
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Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
Can the Siemens 6ES7221-1BF32-0XB0 module accept both sinking and sourcing inputs?
Yes, the Siemens 6ES7221-1BF32-0XB0 SM 1221 module is designed to accept both sinking and sourcing 24V DC digital inputs. This provides flexibility in connecting various types of field devices.