Diagnosis

This function block is used to gather several information from the PLC and the program structure for diagnosis purpose.

The occurrence of “real-time” errors will be shown at output “RTErr”. (New: This flag is set back when calling the block)

„Real-time errors” always occur, when the execution of the program task altogether takes longer, than the period (cycle time) specified for one cycle.

Example without “real-time errors” (by activating or deactivating macros, different program runtimes can occur):

Example with „real-time errors“ (by activating or deactivating macros, different program runtimes can occur):

Example with „real-time errors“ during online communication

Signals

Name I/O Type(s) Function
RTErr O BIT Real-time error