RIEVTECH STUDIO SOFTWARE MANUAL If you select by Variable, you can specify a word register and enter a value to the word register to change meter during running your project, as shown in the figure below. l Display Range Scale Set the upper and lower limit for alarm on the position shown in the figure below. The limit value can be set by Constant or by Variable. After setting the upper and lower limit value, you can also set the colors for value within limit, below lowerlimit and above upper limit, as shown below. 227