FUNCTION_BLOCK N


			ALGORITHM LOOKUP IN Java :
 try {VALUE.value =
			VALUES.value.split(",")[N.value];}
 catch
			(ArrayIndexOutOfBoundsException ex) {VALUE.value = "";}

			END_ALGORITHM

The operation of an instance of this function block type is defined by the Execution Control Chart (ECC) and algorithm above. It selects the (zero-based) N^th element from a comma-separated list of n input strings. If the inequality N<n is not satisfied, the output is an empty string.

See the CHOICE_TBL FB type for an example of the use of an instance of the N_TBL FB type.