XOR

Overview

IEC bitstring operator for bitwise XOR of bit operands.

If only 1 of the input bits is 1, then the resulting bit will be 1; if both or none are 1, the resulting bit will be 0.

Allowed types:

oBOOL

oBYTE

oWORD

oDWORD

oLWORD

NOTE: XOR allows adding additional inputs. If more than 2 inputs are available, then an XOR operation is performed on the first 2 inputs. The result, in turn, will be XOR combined with input 3, and so on. This has the effect that an odd number of inputs will lead to a resulting bit = 1.

Example in IL

Result is 2#0001_1001.

Var1:BYTE;

LD     2#1001_0011
XOR    2#1000_1010
ST     var1

Example in ST

Var1 := 2#1001_0011 XOR 2#1000_1010

Example in FBD