What happens?
PLC Designer from V3.1
L_DCO_DriveCommunication library V3.1.0.0
When does the problem occur?
An incorrect value is visualised when reading a parameter.
Which products are affected?
The L_DCO_ReadDriveParameter function block from the L_DCO_DriveCommunication library is equipped with a visualisation function. If a parameter with a negative value is read a large positive value is visualised in the field dwData instead of a negative value. The value is indicated in 'unsigned' format.
Possible diagnostics?
None.
Short-term measurements/recommendations?
Ignore the visualised value. The value indicated at the dwData output of the function block is correct.
Evaluation:
Due to the 'unsigned' value format the L_DCO_ReadDriveParameter function block visualises a large positive value instead of a negative parameter value.
