FAQ No. FAQ03137
What does the “W-UP” display mean when the power supply for ZX-E Smart Sensors or ZX-T Smart Sensors or is turned ON?
It means the Amplifier is warming up. "This symbol"* will flash on the sub-display of the Amplifier while it is warming up.
The display will return to normal when warming up has been completed. Settings can be made and measurements can be performed while the Amplifier is warming up. In that case, the normal display will appear instead of the warming-up display. Warming up itself, however, will not be completed, so high-accuracy measurements will not be possible. Also, ZX-L-N Laser type does not have this display function.