6ES7221-1BF32-0XB0
The Siemens 6ES7221-1BF32-0XB0 is a SIMATIC S7-1200 SM 1221 Digital Input Module designed to expand the digital signal acquisition capability of an S7-1200 PLC system. The module provides 8 digital inputs for 24 V DC signals and supports sink/source wiring, giving engineers flexibility when connecting field devices.
It is designed for applications where additional ON/OFF signal monitoring is required beyond the digital inputs available on the selected S7-1200 CPU.
TECHNICAL SPECIFICATIONS
Siemens Article Number : 6ES7221-1BF32-0XB0
Product Family : SIMATIC S7-1200
Module Series : SM 1221
Module Function : Digital Input
Number of Inputs : 8 Digital Inputs
Input Voltage : 24 V DC
Input Configuration : Sink / Source
Signal Type : Digital
Typical Signal : ON / OFF
System Type : Modular PLC I/O Expansion
Application : Industrial Automation & Machine Control
BENEFITS
- 8-channel digital input expansion
- 24 V DC input operation
- Sink/source input flexibility
- Compact solution for S7-1200 systems
- Suitable for machine-control applications
- Simplifies connection of discrete field signals
- Helps accommodate additional sensors
- Suitable for OEM and industrial control panels
- Supports scalable PLC system design
- Useful for machine upgrades and automation retrofits
FEATURES
· 8 Digital Inputs for discrete signal acquisition
· 24 V DC input voltage for standard industrial control signals
· Sink/Source input capability provides flexible wiring options
· Designed specifically for the SIMATIC S7-1200 PLC platform
· Provides additional digital input capacity for S7-1200 systems
· Suitable for monitoring ON/OFF field signals
· Supports connection of various 24 V DC sensors and switches
· Ideal for machine status and process monitoring
· Suitable for push buttons, limit switches and proximity sensors
· Can receive signals from photoelectric and position sensors
· Useful for motor, actuator and equipment feedback signals
· Compact modular design for PLC control-panel integration
· Helps expand I/O capability without changing the basic PLC architecture
· Suitable for OEM machine building and industrial automation
· Useful for machine upgrades, retrofits and control-panel expansion
· Integrates into scalable SIMATIC S7-1200 automation systems
· Suitable for applications requiring multiple discrete field inputs
· Supports centralized acquisition of machine and process status signals
· Designed for reliable integration into industrial PLC control systems
MAAN ELECTRO CONTROLS
📧 info.maanelectrocontrols@gmail.com
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