In most procurement cycles, 6ES7221-1BH32-0XB0 is considered with Schneider PLC, Siemens HMI and Simatic S7 1200, giving decision-makers confidence that they’ve chosen the most dependable component.
6ES7221-1BH32-0XB0 - Siemens Analog Input Module S7-1200
The 6ES7221-1BH32-0XB0 is a reliable digital input module from the Siemens Analog Input Module S7-1200 PLC family.

| Brand | Siemens |
| Product Type | PLC - Programmable logic Controller |
| Series | Simatic S7-1200 |
| SKU / MPN | 6ES7221-1BH32-0XB0 |
Siemens Analog Input Module S7-1200 6ES7221-1BH32-0XB0 Technical Specifications:
| Specification | Value |
|---|---|
| Product Description | SIMATIC S7-1200, Digital input SM 1221, 16 DI, 24 V DC, Sink/Source |
| Product Family | SM 1221 digital input modules |
| Product Lifecycle (PLM) | PM300:Active Product |
| Net Weight (kg) | 0,190 Kg |
| Packaging Dimension | 9,00 x 10,90 x 6,00 |
| Package Size Unit of Measure | CM |
| Country of Origin | Germany |
The 6ES7221-1BH32-0XB0 belongs to the SM 1221 digital input module family and delivers 16 digital inputs at 24V DC, supporting both sink and source configurations. Its compact design with a net weight of just 0.190 kg and packaging dimensions of 9.00 x 10.90 x 6.00 cm makes it ideal for tight control cabinet installations. The product is proudly Made in Germany, ensuring world-class build quality and performance assurance.
This PLC module is classified under PM300: Active Product Lifecycle, ensuring long-term availability and technical support. With typical power dissipation of 2.5W, it offers excellent energy efficiency while maintaining stable operation across varying load conditions. Integration with the SIMATIC S7-1200 platform is seamless, with fast commissioning through the STEP 7 TIA Portal, making it easier for engineers to configure and deploy automation solutions in less time.
Built for industrial resilience, the Siemens Analog Input Module S7-1200 6ES7221-1BH32-0XB0 withstands ambient temperatures up to 60°C and is engineered to meet international safety and electromagnetic compatibility standards. Whether you're upgrading an older setup or designing a new machine, this digital input module offers plug-and-play flexibility, robust signal acquisition, and the consistent reliability expected from Siemens’ industrial automation lineup.
The Siemens 6ES7221-1BH32-0XB0 PLC is purpose-built for accurate and fast digital input detection across diverse industrial environments. In automotive manufacturing, it ensures real-time feedback from sensors and interlocks, helping maintenance engineers reduce downtime and improve assembly line throughput. Its compatibility with industry-standard proximity and position sensors makes it a top choice for managing complex I/O systems with high reliability.
In water treatment facilities, this module accurately captures on/off status from level sensors, float switches, and pump feedback lines—enhancing process reliability and operational safety. For packaging machines, the 6ES7221-1BH32-0XB0 supports high-speed input response needed for counting, fault detection, and safety signal monitoring, making it integral to high-precision applications. Its strong performance and rugged casing mean it remains stable even under electrical noise and harsh environmental conditions.
Educational institutions and engineering colleges across India prefer this model to train students in PLC automation due to its clear design, error diagnostics, and integration with Siemens TIA Portal. Whether you're a junior engineer wiring your first panel or a senior technician upgrading an automation cell, the Siemens Analog Input Module S7-1200 6ES7221-1BH32-0XB0 PLC gives you the confidence, accuracy, and long-term reliability needed in India’s growing industrial sector.



