Modicon M580, Safety Manual

Using Control Expert with Safety, you can program, configure and maintain a safety application. When designing and programming your safety application, apply safety functions only to components of a safety loop. NOTE: Include only safety modules, their configuration settings, and their data in a safety loop. After commissioning, while your M580 safety system is operating in safety mode, the safety system periodically reads safety inputs, processes the application program safety logic, performs diagnostics, and applies the logic results to safety outputs. If controller or I/O diagnostics detect an error, the safety system places the affected part of the system into the defined safe state. Depending on the nature of the detected error, the scope of the response may place a single I/O channel, an I/O module, or the entire system into the defined safe state.