SIMATIC S7-400 / S7-400H / S7-400F/FH
The SIMATIC S7-400 is the powerful PLC for mid to high-end performance ranges, serving the needs for even the most demanding tasks, at the same time allowing customisation with a comprehensive range of special function modules for optimal adaptation to the automation task.
The S7-400H is the fault-tolerant automation system with redundant configuration for applications with high failure safety requirements — particularly for scenarios when high restart costs, expensive downtimes, little supervision, and complex maintenance occur.
The S7-400F/FH is the failsafe automation system for plants with high safety requirements, complying to stringent safety requirements up to SIL 3 to IEC 61508, AK6 to DIN V 19250 and Cat. 4 to EN 954-1.
Learn more
S7-400H
The S7-400H is the widely recognised fault-tolerant system, where the hot-standby CPU performs a bumpless switchover from the master CPU should any incident occur.
Designed for applications where downtime is simply not an option — high restart costs, limited supervision, and complex maintenance make the S7-400H the ideal choice for critical infrastructure and continuous process plants.
Signal modules
A full range of digital and analogue signal modules for connecting field devices and sensors to the S7-400 controller.
Communication modules
A wide range of communication modules enabling the S7-400 to connect to various industrial networks and field devices.
Beyond standard communication protocols, application-specific modules are also available for specialised automation needs.