Chapter 6 Applied Instructions Symbol S 1 ： Data source 1 S 2 ： Data source 2 D ： Operation result 6_ Explanation 1. This instruction applies the logical operator XOR to the binary representations in S 1 and S 2 . It performs the logical exclusive operation OR on each pair of corresponding bits, and stores the operation result in D . 2. Only the DXOR instruction can use the 32-bit counter, but not the device E. 3. The result in each position is 1 if the two bits are different, and 0 if they are the same. Example 1 When X0.0 is ON, the instruction performs the exclusive operation OR on each pair of corresponding bits in the 16-bit device Y0 and the 16-bit device Y2.
It stores the operation result in Y4. 6-243 API Instruction code Operand Function 0804 D WXOR P S , S , D 1 2 Logical exclusive OR operation Device X Y M S T C HC D FR SM SR E K 16# “$” F S 1 S 2 D BOOL WORD DWORD LWORD UINT INT DINT LINT REAL LREAL TMR CNT STRING Data type S 1 S 2 D Pulse instruction 16-bit instruction 32-bit instruction AS AS AS