The Signal Selector function block reads the values and statuses of as many as sixteen inputs. The number of inputs is an extensible parameter. The block default is two inputs. You add inputs by right-clicking the function block diagram, clicking Extensible Parameters, and modifying the number of inputs. This creates additional input connectors for the block.
You configure the selector type parameter (SEL_TYPE) to specify which of the three available methods (algorithms) is used to select the output:
SEL_TYPE = max selects the maximum value of the inputs.
SEL_TYPE = min selects the minimum value of the inputs.
SEL_TYPE = avg calculates the average value of the inputs.