Calibration And Scaling - Beckhoff EP4378-1022 Manual

5.2.6

Calibration and scaling

5.2.6.1 Vendor calibration
Each analog input 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 [} 54].
You will find the coefficients for the different measuring ranges in the following CoE objects:
Connection CoE object (read only)
X01 810F
X02 811F
X05 812F
X06 813F
Disabling the vendor calibration
Measuring error with disabled vendor calibration
The measuring error specified in the technical data [} 13] is no longer guaranteed if you disable the vendor
calibration.
If you use the user calibration, it may be a good idea to disable the vendor calibration.
Set the following CoE parameters to FALSE to disable the vendor calibration for the respective input.
Connection CoE object
X01 8100
X02 8110
X05 8120
X06 8130
EP4378-1022
)
V
cannot be changed by the user. If you wish to carry out a calibration yourself, use
V
AI Vendor data Ch.1
hex
AI Vendor Data Ch.2
hex
AI Vendor data Ch.3
hex
AI Vendor data Ch.4
hex
AI Settings Ch.1
hex
AI Settings Ch.2
hex
AI Settings Ch.3
hex
AI Settings Ch.4
hex
Version: 1.4
Y : Measured value after the vendor calibration
V
X : Measured value before the vendor calibration
V
G : Gain of the vendor calibration
V
O : Offset of the vendor calibration
V
NOTICE
Parameter
0B
hex
0B
hex
0B
hex
0B
hex
Commissioning and configuration
Enable vendor calibration
Enable vendor calibration
Enable vendor calibration
Enable vendor calibration
53