6ES7212-1HF40-0XB0 - Siemens CPU 1212FC DC/DC/Relay

At the heart of the Siemens 6ES7212-1HF40-0XB0 is the powerful CPU 1212FC architecture, designed to operate on a stable DC voltage range of 20.4–28.8 V. It features 8 digital inputs (24 V DC) for sensor connectivity, 6 relay-based digital outputs rated at 2 A for direct actuation of motors, solenoids, and alarms, and 2 analog inputs (0–10 V DC) for process variables such as pressure, temperature, or position feedback. This configuration enables the PLC to handle both discrete and analog control requirements in small to mid-scale automation systems.

With 150 KB of program/data memory, it supports advanced control sequences, safety logic, timers, counters, and data processing within the same device. Compact in size (10.10 × 10.60 × 8.50 cm) and weighing just 0.320 kg, the 6ES7212-1HF40-0XB0 is ideal for installations with limited panel space. The relay outputs eliminate the need for external driver modules, simplifying wiring and reducing hardware costs. Classified under the PM300: Active Product Lifecycle, this PLC ensures long-term availability, firmware updates, and Siemens-certified global support. Designed under strict German engineering standards and assembled in China for worldwide supply, it delivers reliable performance across diverse industrial environments.

The Siemens 6ES7212-1HF40-0XB0 is widely deployed in automation projects where compact size and safety integration are essential. In conveyor belt systems, it handles both motion control and safety stop logic, ensuring operator protection and system reliability. In packaging lines and bottling plants, it synchronizes actuators, monitors safety interlocks, and manages emergency stop responses without requiring separate safety controllers. In machine guarding applications, it processes inputs from light curtains, safety switches, and emergency stop buttons while controlling safety outputs for immediate shutdown when needed.

Its analog input channels enable precise monitoring of process parameters in industries such as food processing, pharmaceuticals, and manufacturing. Relay outputs support direct control of alarms, warning lights, and motor starters, making it suitable for equipment where electrical isolation and high-current switching are required. OEMs and system integrators appreciate its TIA Portal integration for faster engineering, simulation, and diagnostics, while maintenance teams value its simplified troubleshooting and wiring. Whether for a new build or a retrofit project, the Siemens 6ES7212-1HF40-0XB0 delivers the flexibility, safety compliance, and trusted performance demanded by today’s smart manufacturing environments.