CXVIN Command - Analog Input Calibration
Calibrates voltage readings from the device’s analog inputs (AD).
What is it for?
| Use case | Description |
|---|---|
| 📏 Measurement precision | Adjust readings to actual values |
| ⚡ Battery monitoring | Calibrate power supply voltage reading |
| 🔧 Factory configuration | Initial equipment adjustment |
| 📊 Analog sensors | Improve fuel sensor precision |
Description
Allows calibrating the analog-to-digital conversion parameters using the device’s main power supply voltage as reference.
It is essential to verify with a multimeter that the supply voltage is exactly as indicated in the command before executing the calibration.
Commands
Query current factor
QCXVINResponse
RCXVINaaaaCalibrate
SCXVINbbbbParameters
| Parameter | Description |
|---|---|
| aaaa | Internal calibration factor (calibration result) |
| bbbb | Applied voltage in hundredths of volt (e.g.: 2400 = 24.00V) |
Calibration Procedure
- Power the device with stable voltage (recommended: 24.00 VDC)
- Verify with multimeter that the voltage is exact
- Send command with the measured value in hundredths
Example
Supply verified at 24.00 VDC:
>SCXVIN2400<
>RCXVIN0995<The value 0995 is the internal adjustment factor calculated for AD readings.
Compatibility
💾Firmware v1.08.00
SPLegacy
ULLegacy
MTLegacy
💾Firmware v1.00.00
SP-IOT
SM-IOT
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