Siemens
Siemens SIMATIC S7-1200 16-Channel Digital Input SM 1221
Siemens SIMATIC S7-1200 Digital Input SM 1221, 16 DI, 24V DC
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12-month warranty
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Same-day dispatch
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Veteran-owned
CAGE: 9NK75
16 Digital Inputs
24V DC Operation
Sink and Source Capability
Expanded I/O for S7-1200
High-Performance Module
Siemens Quality
Product description
The Siemens 6ES7221-1BH32-0XB0 is a digital input signal module for the SIMATIC S7-1200 series, offering 16 digital inputs. It operates at 24V DC and supports both sinking and sourcing input configurations.
This module provides expanded I/O capacity for S7-1200 controllers, suitable for complex automation tasks requiring a larger number of discrete inputs from sensors and switches.
Stanlo Automation, your trusted source for surplus industrial automation components, offers the 6ES7221-1BH32-0XB0 to ensure you have the necessary parts for your Siemens automation projects.
Technical specifications
| Type | Digital Input Module |
| Series | SIMATIC S7-1200 |
| Model | SM 1221 |
| Inputs | 16 DI |
| Voltage | 24 V DC |
| Configuration | Sink/Source |
Common applications
Complex Automation
Machine Control
Industrial Automation
Process Control
Data Acquisition
Factory Automation
Compatible systems
SIMATIC S7-1200 CPUs
Also known as
Siemens SM1221 16DI
S7-1200 16 Channel Input
6ES72211BH320XB0
Replaces / compatible with
This 16-channel SM 1221 module expands the digital input capabilities of the Siemens S7-1200 PLC. It is compatible with various S7-1200 CPUs and can replace configurations needing more input points.
Technical note
Expert tip
This module is ideal for applications requiring a high density of digital inputs on an S7-1200 system.What happens next?
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Frequently asked questions
What is the input configuration flexibility of the Siemens 6ES7221-1BH32-0XB0 module?
The Siemens 6ES7221-1BH32-0XB0 SM 1221 module offers 16 digital inputs that operate at 24V DC. It supports both sinking and sourcing input configurations, allowing connection to a wide range of field devices.