For each defined zone, two zone temperatures can be established using the Set Machine Recipe command on the Machine menu. These temperatures might be upper and lower boundaries for the acceptable range of values in that zone or they might represent the settings of upper and lower heating elements in a process.
Zone Temperature Lines appear in the Data Graph as colored bars at the temperature set for each zone. (Zone Temperatures can be displayed only after zone sizes are defined). Upper Zone Temperature Lines appear in the Data graph as solid colored bars and the lower Zone Temperature Lines are dashed.