The Siemens 6ES7314-6EH04-0AB0 is a SIMATIC S7-300 CPU with integrated PROFINET, supporting up to 8 function modules (FM 8) and carrying a rated I2t of 0.7 A·s for internal overcurrent protection. Programming languages include LAD, FBD, STL, SCL, GRAPH, HiGraph, and CFC, covering relay-ladder through structured text and continuous function charts. The integrated PROFINET interface supports IRT for deterministic communication, UDP/TCP via loadable function blocks, and can act as both IO controller and I-device. STEP 7 V5.5 or higher is required for configuration; TIA Portal is not supported on this CPU.
Mounting and environment
Dimensions are 120 mm width × 125 mm height × 130 mm depth, fitting the standard S7-300 mounting rail. Leave clearance for the front connector door and airflow. Rated for operation from 0 °C to 60 °C; verify enclosure cooling if ambient approaches the upper limit. Internal fuse carries I2t 0.7 A²·s. Isolated analog inputs accept ±20 mA, 0–20 mA, 4–20 mA, ±10 V, and 0–10 V signals—covers most process transmitters and actuator feedback.