DP Diag tab

Here, bus cabling problems and DP cycle times are displayed:

detected bus-errors: Here, the number of detected bus errors is displayed. If this counter is not equal 0, the cabling should be checked (provided that no PROFIBUS connectors were pulled or inserted - usually there are short bus disturbances during pulling or inserting of PROFIBUS connectors). 

CycleWithRepeatCounter: Here, the number of PROFIBUS cycles is displayed, in which a telegram was repeated at least once. Repetitions are also an indication that the physical bus characteristics are not 100% OK.

max. Repeat/Cycle: Here, the maximum number of repetitions within a cycle is displayed.

min./max./actual Cycle-Time: Here, the minimum, maximum and current DP cycle time is displayed. Only those cycles are considered, during which all slaves participated in the data exchange and no repetitions occurred.

CycleWithNoDxch-Counter: Increments if not all slaves participate in the data exchange (i.e. have a DpState not equal 0)

Real Failed-Cycle-Counter: Increments if the DP cycle was not completed before the next task cycle began and all the slaves are involved in the data exchange (i.e. have a DpState of 0).