Which products are affected?
PLC Designer from V3.5
What happens?
The speed limitation values (Upper/LowerSpeedLimit) of the i700 servo inverter cannot be changed anymore by directly writing on the process image (EtherCAT I/O image), e.g. from the PLC application.
When does the problem occur?
From PLC Designer V3.5 onwards, these values are cyclically overwritten by the axis driver. The advantage is that now writing can be executed via symbolic access per axis data structure.
Diagnostic options?
The values from the PLC application directly written to the process image will be overwritten immediately and do not get to the i700.
Short-term measures/recommendations?
Use the axis data structure to symbolically access the speed limitation value of the i700 as follows:
myAxisRef.axisRefLenzeExtension.diTModeUpperSpeedLimit
or
myAxisRef.axisRefLenzeExtension.diTModeLowerSpeedLimit
Evaluation
From the PLC Designer V3.5 onwards, the axis driver of the i700 servo inverter writes the speed limitation values cyclically. Thus, the axis driver overwrites the values that are written on the process image.
