Siemens 6ES7221-1BF22-0XA0 Digital inputs

Siemens 6ES7221-1BF22-0XA0 Digital inputs

Details of the module

Input Current (from backplane bus): 5 V DC, max. 30 mA
Power Loss: Typ. 2 W
Digital Inputs: 8
Input Voltage:
Type of input voltage: DC
For signal "0": 0 to 5 V
For signal "1": +15 to +30 V
Input Current (for signal "1"): Typ. 4 mA
Dimensions:
Width: 46 mm
Height: 80 mm
Depth: 62 mm
Weight: .150 g

The Siemens 6ES7221-1BF22-0XA0 is a digital input module from the SIMATIC S7-200 series, designed exclusively 

for use with S7-22X CPUs. This module offers eight digital inputs, each operating at 24 V DC and supporting both 

sinking and sourcing configurations. The 6ES7221-1BF22-0XA0 is engineered for seamless integration into 

industrial environments, providing reliable signal acquisition and consistent performance in demanding production 

settings. Its robust design ensures long-term operation, while easy installation minimizes downtime for maintenance 

or upgrades. The compact form factor of the 6ES7221-1BF22-0XA0 makes it suitable for control cabinets where space is 

at a premium.

Frequently asked questions：

Q1: What is the Siemens 6ES7221-1BF22-0XA0 used for?
A: It is used as a digital input module to acquire signals from field devices for Siemens S7-200 PLCs.
Q2: How many digital inputs does this module support?
A: It supports 8 digital inputs.
Q3: Is this module compatible with Siemens S7-200 PLCs?
A: Yes, it is designed specifically for S7-200 series PLCs.

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