Application:
Positioning of the virtual line shaft, e.g. via function block PSAVE or if an external position encoder (system bus) is used.
Description:
In order to avoid drive movements when the controller is connected to an absolute master value, the initialisation of FB CDATA has been changed. The profile data is now assigned to the absolute X position during the start-up phase. Compared to previous versions, controller enable had to be delayed depending on the position of the virtual line shaft and the number of points in order to avoid that the drive moves when being switched on.
If the virtual line shaft is freely positioned during operation, e.g. by changing from one master value encoder to another, changing from absolute value encoder to virtual master, etc. a transition must be possible without mains connection. In these cases position jumps can often not be processed in 1 ms cycles. Therefore, the adjustment must be logically integrated into the application.
In order to enable this process, FB CDATA and CURVEC1 have been extended by digital outputs -INIT. If these outputs are HIGH, the x-axis (CDATA-X-NOUT) and y-axis (CDATANOUT, CURVEC1-DFOUT) are still in process and do not follow the set profile function. The signals are to be implemented into the FB configuration in order to exclude a useless drive movement.
