The GuardPLC system is a state of the art safety system offering the fastest safety PLCs, fastest controller throughput, and fastest safety network available. Designed in accordance with IEC 61131, the GuardPLC system meets the worldwide standard for programmable controls. It complies with many of the latest global safety standards and the worldwide standard for functional safety in programmable electronic systems. The GuardPLC system can be used without restriction in applications up to Category 4 according to EN-954 and Safety Integrity Level 3 (SIL 3) according to IEC 61508