6AG1214-1HG40-4XB0 - Siemens Compact CPU 1214C DC DC Relay

The Siemens Compact CPU 1214C DC/DC/Relay 6AG1214-1HG40-4XB0 is a high-performance Programmable Logic Controller (PLC) from the SIPLUS S7-1200 family. Designed by Siemens for use in industrial environments, this CPU 1214C DC/DC/Relay variant features compact design, conformal coating, and flexible onboard I/O, making it a reliable choice for rugged automation systems.

The 6AG1214-1HG40-4XB0 is based on the standard 6ES7214-1HG40-0XB0 and enhanced under Siemens’ SIPLUS platform, offering a conformal coating for protection against moisture, dust, and corrosive environments. This Compact CPU 1214C DC/DC/Relay supports a temperature range of -20°C to +60°C, making it suitable for semi-outdoor and harsh cabinet conditions. It runs on a DC power supply of 20.4–28.8 V and includes a powerful 100 KB of program/data memory to manage complex automation logic and communication tasks. The onboard I/O configuration features 14 digital inputs (24 V DC), 10 relay outputs rated at 2 A, and 2 analog inputs (0–10 V DC), allowing integration of both discrete devices and analog sensors such as pressure, level, or temperature transmitters. With compact dimensions of 11.00 x 11.40 x 8.20 cm and a net weight of 0.394 kg, the controller is optimized for space-saving installations. It carries the PM300: Active Product Lifecycle designation, ensuring Siemens’ long-term support and availability.

Applications of Siemens PLC 6AG1214-1HG40-4XB0

The Siemens 6AG1214-1HG40-4XB0 Compact CPU 1214C is ideal for automation tasks in energy systems, material handling equipment, water management plants, and HVAC panels. The combination of relay outputs and analog inputs makes it a flexible choice for controlling actuators and monitoring key process variables in distributed field environments. Its ruggedized design and conformal coating allow it to operate in conditions where temperature, dust, or vibration would challenge traditional controllers. OEMs and system integrators appreciate the seamless integration with Siemens' TIA Portal, enabling fast configuration, diagnostics, and scalability. Whether for new installations or upgrading legacy systems, the 6AG1214-1HG40-4XB0 provides Siemens-grade reliability in a compact and resilient form factor.