There is no event or flag to see that it is time to do NUC. The red warning is generated by the camera control as below:
- NUC by time. 15 minutes or less should be OK.
- NUC at shutter temperature change >0.5°C. Read temperature by Properties 63 and 64. Resource for A40 is “.system.tempsens.shutter”
If you use A320, A325 or SC6xx, the resource is different, please refer to command manuals.