Description

The Siemens CPU 1211C DC/DC/DC is a compact and efficient programmable logic controller (PLC) designed for small to medium-scale automation tasks that demand speed, reliability, and flexibility. This model operates on a 24 V DC power supply and comes equipped with 6 digital inputs, 4 digital transistor outputs (24 V DC), and 2 analog voltage inputs (0–10 V). With a program memory of 50 KB and a data memory of 50 KB, it is capable of handling moderately complex automation processes, logic functions, and high-speed tasks such as pulse counting and frequency measurement using its integrated high-speed counters. The CPU supports PROFINET communication, enabling seamless integration into industrial Ethernet networks for fast and reliable data exchange. It also provides modular expansion capabilities, allowing users to connect up to three signal boards and up to eight signal or communication modules to adapt to diverse application needs. This makes it ideal for scalable control solutions across industries such as manufacturing, packaging, materials handling, and smart infrastructure projects. Its small footprint, combined with flexible digital and analog I/O handling, makes the 1211C DC/DC/DC a cost-effective and performance-driven choice for system integrators and OEMs who prioritize responsiveness, expandability, and control precision.