This chapter describes how the diagnostic mechanisms provided by PROFINET can be used in Automation Builder.

The detection and correction of system-related malfunctions (for example, caused by firewalls) are described in the ⮫ Troubleshooting chapter.

To prevent downtimes during plant operation, diagnostic functions support the rapid detection and, in some cases, prevention of faults. To achieve this, PROFINET provides extensive diagnostic mechanisms that identify the source and location of a fault. As a result, a device, module or even an individual I/O channel can be identified as the source of the fault. Diagnostic information also provides details about the severity and cause of the fault.