PLC Digital Input Module

Product Description

The Siemens SIMATIC S7-300 Digital Input Module SM 321, model 6ES7321-1BH02-0AA0, expands the capabilities of PLC systems by providing 16 digital inputs operating at 24V DC. Ideal for industrial automation applications.

Product Specifications

- Manufacturer: Siemens
- Product Family: SIMATIC S7-300
- Module Type: SM 321 Digital Input Module
- Order Number: 6ES7321-1BH02-0AA0
- Number of Digital Inputs: 16
- Input Voltage: 24 V DC
- Hardware/Firmware Version: E-Stand 3
- Certifications: CE, UL, FM, ATEX (KEMA 02 ATEX 1096X)
- Operating Temperature: 0°C to +60°C

Product Label Info

Model Code / Product Markings: 6ES7321-1BH02-0AA0

GTIN (EAN): 4025515060417

Application

Supports a wide range of industrial automation equipment and processes.

Country of Origin

This product is manufactured in Germany.

Method of Application

Integrate this module into your existing Siemens SIMATIC S7-300 PLC system for enhanced digital input capabilities.

Safety Instructions

Ensure proper grounding and follow installation guidelines provided in the user manual.

Availability

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

Need urgent and express delivery, sourcing, or repairs? Contact us now.

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 PLC Digital Input Module used for?

This part is typically used in industrial automation environments, such as manufacturing plants. It handles binary control signals from sensors and switches.

What are the key advantages of the PLC Digital Input Module?

Enhanced digital input capabilities, reliable performance, and ATEX certification for use in explosive atmospheres.

Is 6ES7321-1BH02-0AA0 compatible with my system?

If you're using Siemens SIMATIC S7-300 PLC systems, this module will be compatible. Contact us for verification.

Alternatives to 6ES7321-1BH02-0AA0

Consider other Siemens SIMATIC S7-300 modules for similar functionality and performance.

Can I sell my surplus stock to PLC2DAY?

Yes, PLC2DAY accepts surplus stock for resale. Contact us for more information on surplus recovery and resale agreements.

Need Help?

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

Last Update: 12/03/2026

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