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Home Product 6ES7221-1BH22-0XA0 Siemens SIMATIC S7-200 Smart Digital Input Expansion Module for PLC Automation and Control Systems
6ES7221-1BH22-0XA0

6ES7221-1BH22-0XA0 Siemens SIMATIC S7-200 Smart Digital Input Expansion Module for PLC Automation and Control Systems

6ES7221-1BH22-0XA0 module
Siemens S7-200 module
Digital input SM 221
6ES7221-1BH22-0XA0
6ES7221-1BH22-0XA0 module is a Siemens S7-200 series Digital input SM 221 with 16 channels, designed for industrial automation applications. Enables reliable digital signal processing and seamless integration with S7-200 PLC systems.
Categories:Automation
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Product Description

The 6ES7221-1BH22-0XA0 module is a Siemens S7-200 series Digital Input Module (SM 221) designed for industrial automation. It features 8 digital input channels, supporting 24V DC signals, and integrates seamlessly with the S7-200 PLC system. This module operates at a voltage range of 20.4–28.8V DC, with a temperature tolerance of 0–55°C, ensuring reliability in harsh environments like manufacturing, process control, and machinery automation. It supports direct connection to sensors or switches and interfaces via the S7-200 backplane, enabling communication through the PLC's PPI/MPI protocols. Compact and durable, it simplifies installation but lacks analog input capability and onboard diagnostics. The module requires no battery or display, focusing on robust digital signal acquisition.
Parameter Specification
Module Type 6ES7221-1BH22-0XA0 (Siemens S7-200 Digital Input SM 221)
Digital Input Channels 8 isolated inputs
Nominal Input Voltage 24 V DC
Input Current 4 mA typical at 24 V DC
Power Consumption 1 W (from CPU bus)
Isolation Voltage 500 V AC (between field and logic circuit)
Signal Delay Time 1.2 ms to 4.8 ms (configurable)
Connection Type Screw terminal block
Compatible Systems Siemens S7-200 PLC series
Certifications CE, cULus, Ex
question:Why are shipping costs so high? Do you offer cheaper courier options?
answer:Shipping costs vary by carrier, destination, and package weight. For bulk orders, contact us for discounted rates.
question:What shipping methods do you support?
answer:We support DHL, Fedex, UPS, and other major carriers. Specific options depend on destination and product type.
question:Do you provide technical selection guidance for products?
answer:Yes, our team offers technical advisory services to help choose suitable solutions based on your requirements.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why are shipping costs so high? Do you offer cheaper courier options?
answer:Shipping costs vary by carrier, destination, and package weight. For bulk orders, contact us for discounted rates.
question:What shipping methods do you support?
answer:We support DHL, Fedex, UPS, and other major carriers. Specific options depend on destination and product type.
question:Do you provide technical selection guidance for products?
answer:Yes, our team offers technical advisory services to help choose suitable solutions based on your requirements.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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