F_Not; F_2Out3 - Siemens SIMATIC S7 F Manual

Fail-Safe Blocks
8.7.4

F_NOT

Function
The block inverts the input.
Truth Table
IN OUT
0 1
1 0
I/Os
Input:
Output:
Error Handling
None
8.7.5

F_2OUT3

Function
This block monitors three binary inputs for signal state 1. The output OUT is 1 if at
least two inputs are 1. Otherwise, the output is 0. The output OUTN corresponds to
the negating output OUT.
Truth Table
IN1 IN2
0 0
0 0
0 1
0 1
1 0
1 0
1 1
1 1
Fail-Safe Systems
A5E00085588-03
Name Data Type
IN F_BOOL
OUT F_BOOL
IN3 OUT OUTN
0 0 1
1 0 1
0 0 1
1 1 0
0 0 1
1 1 0
0 1 0
1 1 0
Explanation Default
Input 0
Output 1
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