16 Digital Inputs
Provides 16 digital input channels for collecting discrete signals in SIMATIC S7-1200 automation systems.
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SIEMENS
Siemens 6ES7221-1BH32-0XB0 Digital Input Module 16DI 24VDC
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$67.50
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Siemens |
| Model Number | 6ES7221-1BH32-0XB0 |
| Product Category | Digital Input Module |
| Product Family | SIMATIC S7-1200, SM 1221 |
| Module Type | Digital Input, DI 16x24 V DC |
| Number of Digital Inputs | 16 |
| Rated Input Voltage | 24 VDC |
| Permissible Input Voltage Range | 20.4-28.8 VDC |
| Input Grouping | 4 groups |
| Typical Power Loss | 2.5 W |
| Protection Rating | IP20 |
| Dimensions | 45 x 100 x 75 mm |
| Net Weight | 0.190 kg |
Key Features
24 VDC Input
Uses a rated input voltage of 24 VDC, with a documented permissible range of 20.4-28.8 VDC.
SM 1221 Module
Belongs to the SM 1221 digital input module family within the SIMATIC S7-1200 product range.
Four Input Groups
The 16 digital inputs are arranged in four groups according to the published technical specifications.
Input Status LEDs
LED indicators provide visual status information for the digital input channels.
IP20 Protection
The module is specified with an IP20 degree of protection for appropriate control cabinet installations.
Applications
- PLC digital signal acquisition
- Industrial machine status monitoring
- Push-button and selector-switch signal input
- Limit-switch status monitoring
- Industrial sensor signal collection
- Control panel input expansion
- Automated production equipment
- Industrial process control systems
Purchase Information
We support online purchase of the Siemens 6ES7221-1BH32-0XB0 Digital Input Module. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.
Frequently Asked Questions
What is Siemens 6ES7221-1BH32-0XB0?
It is an SM 1221 digital input module in the SIMATIC S7-1200 product family.
How many digital inputs does this module provide?
The module provides 16 digital inputs.
What is the rated input voltage?
The rated input voltage is 24 VDC.
What is the permissible input voltage range?
The documented permissible range is 20.4-28.8 VDC.
How are the digital inputs grouped?
The 16 digital inputs are arranged in four groups.
What is the protection rating?
The documented degree of protection is IP20.
What are the module dimensions?
The specified dimensions are 45 x 100 x 75 mm.
What is the net weight?
The Siemens catalog lists a net weight of 0.190 kg.
What applications can this digital input module be considered for?
It can be considered for PLC signal acquisition, machine status monitoring and industrial control applications where 24 VDC digital inputs are required.
What should be checked before ordering?
Verify the complete model number, required input count, signal voltage, grouping, installation conditions and system requirements before ordering.
What should be checked before installing the module in an existing system?
Check the PLC system configuration, electrical requirements, wiring documentation and installation conditions against the existing equipment specifications.
Need help confirming a model?
Send us your part number and technical requirements.
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