Siemens SIMATIC S7-1200 G2 SM 1221 DC Digital Input Module

Product Description

The Siemens SIMATIC S7-1200 G2 SM 1221 DC Digital Input Module is designed to expand the capabilities of PLCs by providing 16 digital inputs. It is essential for monitoring digital signals in automated systems.

Product Specifications

- Manufacturer: Siemens
- Product Line: SIMATIC S7-1200 G2
- Type: Digital Input Module
- Model: SM 1221 DC
- Order Number (MLFB): 6ES7221-1BH50-0XB0
- Number of Inputs: 16
- Input Type: Digital
- Rated Voltage: 24V DC
- Firmware Version: V01.00.00

Product Label Info

Model Code / Product Markings: 6ES7221-1BH50-0XB0

Application

This module is suitable for applications requiring the monitoring of digital signals such as sensors, switches, and push-buttons within automated systems.

Country of Origin

This product is manufactured in Germany.

Method of Application

Ensure compatibility with your existing S7-1200 CPU and system configuration for optimal performance.

Safety Instructions

Handle with care and follow standard industrial safety guidelines for installation and operation.

Availability

Order now from PLC2Day, items in stock and ready for fast worldwide delivery.

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Documentation

• Official datasheet or product page Siemens

Resources

Additional resources and manuals are available upon request. Contact us for details.

Internal & External Links

• All products from Siemens
• Explore similar products in Automation

Frequently Asked Questions

What is the Siemens SIMATIC S7-1200 G2 SM 1221 DC Digital Input Module used for?

This module is typically used in industrial automation environments to monitor digital signals and inputs.

What are the key advantages of Siemens SIMATIC S7-1200 G2 SM 1221 DC Digital Input Module?

It offers expanded input capabilities for PLCs, enhancing the monitoring and control of digital signals.

Is 6ES7221-1BH50-0XB0 compatible with my system?

If you're using Siemens S7-1200 series PLCs, especially the second generation, then this module will likely be compatible. Contact us to verify.

Alternatives to Siemens SIMATIC S7-1200 G2 SM 1221 DC Digital Input Module

Consider other digital input modules from Siemens or compatible brands for similar functionality.

Can I sell my surplus stock to PLC2DAY?

Yes, PLC2DAY accepts surplus stock to promote the principles of the circular economy. Contact us for more information on surplus recovery and resale opportunities.

Need Help?

Call us at +31(0)165 20 11 80 or get in touch online.

Last Update: 22/12/2025

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