Product overview：
The SIMATIC S7-1200 features an integrated PROFINET interface, powerful integrated process capabilities, and flexible scalability, providing simple communication and effective solutions for various process tasks, especially meeting completely different automation needs in various applications.
Product features:
Innovative Design
Compact structure, with integrated 10 and modular expansion options modular design, a large number of expansion options, high flexibility
Supports multiple network protocols
Integrated System Diagnosis
Integrated diagnostic function, no additional programming required
Error messages are displayed in plain text format on the HMI or web server in TIA Portal
Significantly reduce downtime
Integrate information security functions
Prevent unauthorized access, copying and execution, as well as program operations
Protect the project from unauthorized changes
to protect intellectual property (right)
Integrated security features
Fault safe CPU for standard and secure applications
Prevent equipment and personnel from being damaged or injured
Integrated security functions are provided through PROFINET to connect with PROFISafe devices. The integrated engineering configuration software allows users to create their programs using the same configuration and operation methods for both standard and safety related tasks
Integrated process functionality
Basic motion control function, PID state detection
All CPUs support tracking function, which can accurately diagnose and optimize user programs and sports applications
TIA Portal Engineering Configuration
Basic motion control function, PID state detection
All CPUs support tracking function, which can accurately diagnose and optimize user programs and sports applications
Product Data
Product：SIMATIC S7-1200 SM 1221, DI 16x24 VDC PLC Expansion Module
Product model：6ES7221-1BH32-0XB0
Product type：S7-1200 Digital expansion
Applicable to safety functions: No
Digital input quantity: 4
Digital output: 0
Supply voltage type: DC