PLC | Siemens | 6ES72121AE400XB0 SIMATIC S7-1200 CPU 1212C 6ES7212-1AE40-0XB0

Product Description: 6ES7212-1AE40-0XB0

The 6ES7212-1AE40-0XB0 is an SB 1212 digital-output signal board for the SIMATIC S7-200 SMART PLC family. Plugged directly onto the front of an S7-200 SMART CPU, it adds eight isolated 24 V DC transistor outputs without increasing the overall footprint. Each output is capable of switching up to 0.5 A and features PNP/NPN compatibility. The board’s high- feature design includes channel-level diagnostics and configurable filtering, making it ideal for reliable actuation of solenoids, indicator lamps, and relay coils in compact automation systems.

Key Features

• Eight PNP/NPN- compatible transistor outputs (24 V DC, 0.5 A each)
• Per-channel diagnostics: short-circuit, overload, and wire-break detection
• Configurable output filtering and timing via STEP 7-MicroWIN SMART
• Status LEDs for each output plus board-level fault indication
• Snap-on mounting to CPU front—no additional DIN-rail space required
• Seamless integration and configuration within TIA Portal or MicroWIN SMART

Technical Specifications

• Number of Outputs: 8
• Output Type: Transistor (sourcing), 24 V DC
• Rated Load Current: 0.5 A per channel
• Total Load Current: ≤ 4 A
• Diagnostics: Short-circuit, overload, wire-break
• Switching Frequency: Up to 1 kHz (resistive load)
• Isolation: 500 V DC channel-to-backplane
• Mounting: Plug-in to S7-200 SMART CPU front
• Power Consumption: Drawn from CPU backplane
• Operating Temperature: 0 °C … +55 °C
• Protection Class: IP20
• Weight: ≈ 100 g

Application Areas

• Actuating solenoid valves, indicator lamps, and small relays
• Compact machine control panels with limited space
• OEM equipment requiring integrated high-feature outputs
• Packaging, material handling, and conveyance systems

Advantages

• Adds eight high-feature outputs without extra modules or rail space
• Integrated diagnostics reduce troubleshooting time
• Configurable output behavior enhances noise immunity and performance
• Direct front-mount design simplifies installation and wiring
• Fully supported in Siemens engineering tools for streamlined commissioning