Calibration And Scaling - Beckhoff EP4378-1022 Manual

5.3.4

Calibration and scaling

5.3.4.1 Vendor calibration
Each analog output is calibrated in the factory. The results of the calibration are the coefficients of a
correction function. The correction function is:
Y = G * X + O
V V V
The coefficients G and O
V
the user calibration [} 62].
You will find the coefficients for the different output signal ranges in the following CoE objects:
Connection CoE object (read only)
X01 814F
X02 815F
X05 816F
X06 817F
Disabling the vendor calibration
Output error with disabled vendor calibration
The output error specified in the technical data [} 13] is no longer provided if you disable the vendor
calibration.
If you use the user calibration [} 62], it may be a good idea to disable the vendor calibration.
Set the relevant "Enable vendor calibration" CoE parameters to FALSE to disable the vendor calibration for
the respective output.
Connection "Enable vendor calibration"
X01 0x8130:08
X02 0x8140:08
EP4378-1022
V
cannot be changed by the user. If you wish to carry out a calibration yourself, use
V
AO Vendor data Ch.1
hex
AO Vendor data Ch.2
hex
AO Vendor data Ch.3
hex
AO Vendor data Ch.4
hex
Version: 1.4
Y : Output value after vendor calibration
V
X : Output value before vendor calibration
V
G : Gain of the vendor calibration
V
O : Offset of the vendor calibration
V
NOTICE
Commissioning and configuration
61