Siemens SIMATIC S7 FH - F_Xor2

Fail-Safe Blocks
Fail-Safe Systems
8-88 A5E00085588-03
8.7.3 F_XOR2
Function
This block links the inputs by means of XOR (exclusive OR). The output OUT is 1 if
exactly one input is 1. The output OUTN corresponds to the negating output OUT.
Truth Table
IN1 IN2 OUT OUTN
0001
0110
1010
1101
I/Os
Name Data Type Explanation Default
Inputs:
IN1 F_BOOL Input 1 0
IN2 F_BOOL Input 2 0
Output:
OUT F_BOOL Output 0
OUTN F_BOOL Negating output 1
Error Handling
None