OR truth table Results of the logic operation The following table shows the results that arise from the OR logic operation of two operands: Signal state of the first operand Signal state of the second operand Result of the logic operation 1 0 1 0 1 1 1 1 1 0 0 0 See also >=1: OR logic operation (S7-1200, S7-1500) Overview of the valid data types Memory areas (S7-1500) Inserting FBD elements Editing FBD elements Inserting operands in FBD instructions System memory areas (S7-1200)