PLC | Siemens | 6ES7222-1BF32-0XB0 6ES7 222-1BF32-0XB0 S71200 Digital output SM 1222

Product Description: 6ES7222-1BF32-0XB0

The 6ES7222-1BF32-0XB0 is a front-pluggable signal board for the SIMATIC S7-1200 PLC family. In a module no wider than the CPU itself, it adds eight isolated 24 V DC digital inputs, enabling compact I/O expansion without consuming additional DIN-rail space. Power and backplane communication are provided directly by the CPU, making this board ideal for small machines, control panels, or OEM systems that require space-efficient discrete input expansion.

Key Features

• Eight isolated 24 V DC digital inputs (PNP compatible)
• Direct front-mount onto S7-1200 CPU—no extra rail space required
• Individual channel status LEDs for live I/O monitoring
• High-noise immunity with integrated input filtering
• Hot-swap replacement when used with appropriate CPU firmware
• Seamless configuration and diagnostics in TIA Portal

Technical Specifications

• Number of Inputs: 8
• Input Voltage: 24 V DC ±20 %
• Input Current: ≤ 6 mA per channel
• Isolation: 500 V DC channel-to- backplane
• Input Filtering: Integrated (configurable in software)
• Status Indicators: LEDs per channel
• Mounting: Front plug-in on S7-1200 CPU
• Power & Bus Supply: Via CPU backplane
• Protection Class: IP20
• Operating Temperature: 0 °C … +55 °C
• Dimensions (W×H×D): Matches CPU form-factor
• Weight: ≈ 100 g

Application Areas

• Discrete input expansion for small to medium machines
• Sensor and switch monitoring in packaging, conveyors, and assembly lines
• OEM control panels where rack space is at a premium
• Building automation and local machine-level I/O

Advantages

• Adds digital inputs without increasing panel footprint
• Front- mount design simplifies installation and wiring
• Status LEDs provide instant visual feedback
• Integrated filtering enhances signal reliability in noisy environments
• Full TIA Portal support for rapid engineering and diagnostics