Fig. 25 Twincat 2.8 - Equidiag Tab - Beckhoff FC3102 Documentation

FC310x as master
3.8.1.6 EquiDiag tab
The "EquiDiag" tab is available for displaying various equidistant monitoring parameters online:
Fig. 25: TwinCAT 2.8 - EquiDiag tab
TcIo-Statistics
max. TwinCAT-Jitter: Here, the maximum TwinCAT jitter is displayed; the measurement is reset as soon as
the tab is no longer active.
min./max. Mapping Time or NC Access Time: Here, the minimum or maximum NC Access Time is
displayed. Apart from the Mapping Time, this also contains the task runtime (provided that "IO at Task Start"
for the highest-priority task linked to the FC310x (usually the NC task) is set).
The NC Access Time should be greater than the sum of the two measured times (max. TwinCAT Jitter plus
max. Mapping Time or (NC) Task Time), with a safety margin of approx. 10%.
max. FCxxxx Jitter: This is only relevant for Sync Mode = "disabled". If the value is greater than 5, real-time
jitter will become excessive, and a more powerful PC should be used. If the associated (NC) task does not
have the highest priority, the maximum FCxxxx jitter can also be larger. This should be avoided.
FC310x-Statistics
Since the PROFIBUS MC slaves should always be added to the FC310x device first, they are always
addressed before the DP slaves in the DP cycle. This part of the DP cycle will be called Equi-Cycle below. If
the Equi-Cycle becomes greater than the To-time of the MC slaves, the last MC slaves at the FC310x device
will usually get a synchronization error (error 597 or 598 for Simodrive 611U).
max. Repeats/Equi-Cycle: This will show the maximum number of repeated Data_Exchange telegrams
during an Equi-Cycle. This will extend the Equi-Cycle, usually no repetitions should occur (unless a bus plug
was pulled or an MC slave was switched off).
min./max. Equi-Cycle: Here, the minimum or maximum Equi-Cycle Time is displayed.
Equi-Cycle Repeat Counter: Here, the number of telegram repetitions within the Equi-Cycle is displayed.
Equi-Cycle NoDxch Counter: Here, the number of occurrences is displayed, for which not all MC slaves
were in data exchange during an Equi-Cycle.
46 Version: 3.0 FC3101 and FC3102