Description

The Siemens CPU 1214C AC/DC/RLY variant is designed for systems requiring AC power supply and relay outputs for flexible load control. It operates on an 85–264 V AC input, with 14 digital inputs, 10 relay outputs capable of switching both AC and DC loads, and 2 analog voltage inputs (0–10 V). The 100 KB internal memory allows it to handle moderately complex control tasks across a range of industries such as building automation, industrial washing systems, HVAC, and assembly machines. Relay outputs are particularly useful in scenarios where devices of varying voltage levels (AC or DC) must be switched from a single controller. Its integrated PROFINET interface ensures easy communication with remote I/O, HMI, and SCADA platforms. The system supports module-based expansion, enabling the user to add analog or digital I/O and extra communication interfaces as needed. Its programming through TIA Portal and strong diagnostics features make it user-friendly for both development and maintenance.