Home > Products > SIEMENS > SIMATIC S7 Series
Product Name: Digital Output Module
Brand Name: Siemens
Model Number: 6ES7221-1BF32-0XB0
Place of Origin: Germany
Warranty: 12 Months
Whatsapp：+86 18020776782
Email：[email protected]
Commercial Terms
Minimum Order Quantity |
1 Piece |
Price |
Contact for Jim |
Packaging Details |
Original new Factory Sealed |
Delivery Time |
3–7 Days |
Payment Terms |
T/T |
Shipping Method |
DHL / FedEx / UPS / TNT |
Supply Ability |
In stock |
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Sales |
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Jim Pei |
| Product Name | Siemens 6ES7221-1BF32-0XB0 Digital Output Module |
| Manufacturer | Siemens |
| Product Type | Digital Output Module |
| Part Number | 6ES7221-1BF32-0XB0 |
| Estimated shipping dimensions | 4.4x7.4x9.9cm |
| Weight | 0.14kg |
| Place of shipment | Xiamen, China |
| Country of origin | Germany |
| Number of Inputs | 8 |
| Input Voltage (rated) | 24V DC |
| Supply Voltage Range | 20.4...28.8V DC |
| Input Current (per channel) | 4 mA (from L+) |
| Current Consumption (5V backplane) | max. 105 mA |
| Input Groups | 2 groups of 4 channels |
| Simultaneously Usable Inputs (≤40°C) | 8 |
| Power Loss (typ.) | 1.5 W |
| Product type designation: | SM 1221, DI 8x24 V DC |
| Rated value (DC) | 24 V |
| for signal \"0\" 5 V DC at | 1 mA |
| for signal \"1\" 15 V DC at | 2.5 mA |
The Siemens 6ES7221-1BF32-0XB0 SM 1221 Digital Input Module is a compact and reliable expansion module designed for the SIMATIC S7-1200 PLC system. It provides 8 digital inputs rated at 24 V DC, enabling efficient acquisition of field signals from sensors, switches, and other industrial devices in automation applications.
The module features IEC 61131 Type 1 input characteristics, offering high noise immunity and stable signal detection even in electrically noisy industrial environments. It is designed to support efficient system expansion with minimal load on the PLC CPU, making it suitable for scalable control system architectures.
In addition, the 6ES7221-1BF32-0XB0 integrates an onboard sensor supply, allowing direct connection and powering of 2-wire and 3-wire sensors. Its compact design, low power consumption, and flexible wiring options make it ideal for modern industrial control cabinets requiring reliable and space-efficient I/O expansion.
1. What is the power consumption of 6ES7221-1BF32-0XB0?
6ES7221-1BF32-0XB0 has a maximum backplane current consumption of 105 mA and a power loss of approximately 1.5 W.
2. What is the input characteristic of 6ES7221-1BF32-0XB0?
6ES7221-1BF32-0XB0 uses IEC 61131 Type 1 input characteristics for improved noise immunity.
3. What voltage does 6ES7221-1BF32-0XB0 support?
6ES7221-1BF32-0XB0 supports 24 V DC input signals with a supply range of 20.4–28.8 V DC.
4. What type of sensors can be used with 6ES7221-1BF32-0XB0?
6ES7221-1BF32-0XB0 supports 2-wire and 3-wire sensors, including PNP proximity sensors and switches.
5. Does 6ES7221-1BF32-0XB0 have sensor power supply?
Yes, 6ES7221-1BF32-0XB0 includes an integrated sensor supply for powering connected field devices.
6. How many channels can be used simultaneously on 6ES7221-1BF32-0XB0?
6ES7221-1BF32-0XB0 supports all 8 channels simultaneously at temperatures up to 40°C.
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