WIKA D-21-9 - Manual (Page 35)

D-20-9 / D-21-9 GB
WIKA Additional Instructions Pressure Transmitter with CANopen Interface D-20-9 / D-21-9 35
6. Calibration
Input Scaling
- 6121h AI Input Scaling 1 PV
- 6123h AI Input Scaling 2 PV
- 7120h AI Input Scaling 1 FV
- 7122h AI Input Scaling 2 FV
The calibration is carried out via objects 6121h and 6123h. The objects 7120h and 7122h are read only.
The device is recalibrated by addressing 2 measuring points and sending the respective set value to the
device. The device offsets the set value specified against the actual pressure value. The 2 measuring points
ideally correspond to lower limit of range and upper limit of range which however might not be possible in each
case (e.g. -1 .. x bar).
Changed parameters are not automatically stored, but they have to be stored via object 1010h Store
Parameters.
Furthermore the device can be reset to the factory settings via object 1011h Restore Default Parameters.