User calibration
Note | |
The user calibration affects the measuring range monitoring. Incorrect calibration coefficients can lead to the Status bits and Status LEDs no longer behaving as expected; see Measuring range monitoring. |
The intended purpose of the user calibration is to calibrate the device, for example, in a smaller measuring range than that calibrated by the vendor. As a result, a higher accuracy can be achieved in the smaller measuring range.
The correction function has the same form as the correction function of the vendor calibration:
| YU = GU * ( XU – OU ) | YU : Measured value after the user calibration XU : Measured value before the user calibration GU : Gain OU : Offset |
Enabling the user calibration
The user calibration is disabled in the factory. It can be enabled individually for each input. To do this, set the corresponding parameter "Enable user calibration" to TRUE:
Channel | Connection | "Enable user calibration" |
|---|---|---|
1 | X01 | 0x800:0A |
2 | X02 | 0x810:0A |
3 | X03 | 0x820:0A |
4 | X04 | 0x830:0A |
5 | X05 | 0x840:0A |
6 | X06 | 0x850:0A |
7 | X07 | 0x860:0A |
8 | X08 | 0x870:0A |
Setting the calibration coefficients
Set the calibration coefficients via the parameters "User calibration offset" and "User calibration gain".
Channel | Connection | "User calibration offset" | "User calibration gain" |
|---|---|---|---|
1 | X01 | 0x0800:17 | 0x0800:18 |
2 | X02 | 0x0810:17 | 0x0810:18 |
3 | X03 | 0x0820:17 | 0x0820:18 |
4 | X04 | 0x0830:17 | 0x0830:18 |
5 | X05 | 0x0840:17 | 0x0840:18 |
6 | X06 | 0x0850:17 | 0x0850:18 |
7 | X07 | 0x0860:17 | 0x0860:18 |
8 | X08 | 0x0870:17 | 0x0870:18 |