Pilz has now developed the intelligent diagnostic concept PVIS for its control technology, the objective being to reduce machine downtimes to a minimum. If a fault occurs, features such as plain text messages with precise information on the location, clearly defined responsibilities and integrated first fault display all ensure that production is quickly restarted. The compact diagnostic unit PMImicro diag can be used to display the messages. Alternatively, PMIvisu graphics operator terminals or any other Windows-based visualisation platform or PC may be used via the PVIS OPC Server with PVIS ActiveXwww.pilz.com