The Limit1 and Limit2 columns define the upper and lower limit value of the variable for the object concerned. The limit value can be defined as a constant, as a system variable or as a PLC variable. Limit value variables must be of the same type as the VarValue variable.
Limit values
The limit values Limit1 and Limit2 are part of the value range. In other words, a value is out of range if the value is less than or greater than Limit1 or Limit2.