Lenze Drive Server Bus server S7 getting started - Manual (Page 35)

Busserver S7
L
96 Busserver S7 DE/EN 1.0
5.8 Optimisation of the cycle time
When FB DRIVE is activated, the PLC cycle is always under load, even if no parameter communication
takes place. Since several parameters are checked when FB DRIVE is called, programming errors can
be detected and the corresponding error messages can be indicated. However, the checking costs
computing time.
To save computing time, you can operate
FB DRIVE in ”expert mode”. This reduces the required
computing time by approx. 50 %.
Proceed as follows to activate the expert mode for FB DRIVE
Open the instance data block and set the variable XpertMode to TRUE:
Note!
When the expert mode is activated, FB DRIVE no longer checks the transferred parameters!
Therefore, the expert mode should only be activated if you are sure that the transferred parameters
are correct.
Tip!
If you have created a program which uses an older version of FB 90, STEP7 will indicate different time
stamps for FB 90 and the corresponding instance data block.
If so, change to the IL editor and create a new STEP7 instance data block. Then you can use the expert
mode.
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