F_Xor2 - Siemens SIMATIC S7 F Manual

Fail-Safe Blocks
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
0 0
0 1
1 0
1 1
I/Os
Inputs:
Output:
Error Handling
None
8-88
OUT OUTN
0 1
1 0
1 0
0 1
Name Data Type
IN1 F_BOOL
IN2 F_BOOL
OUT F_BOOL
OUTN F_BOOL
Explanation Default
Input 1 0
Input 2 0
Output 0
Negating output 1
Fail-Safe Systems
A5E00085588-03