Xor (Exclusive Or); Not (Negation, Inverter) - Siemens LOGO! Manual

4.2.7

XOR (exclusive OR)

The output status of the XOR is 1 if the inputs are not equivalent.
At an unused block input (x): x = 0.
XOR function logic table
1
0
0
1
1
4.2.8

NOT (Negation, Inverter)

The output status is 1 if the input is 0. The NOT block inverts the input status.
Advantage of the NOT block, for example: LOGO! does not require break contacts. You
simply use a make contact and the NOT block to convert these into a break contact.
NOT function logic table
1
0
1
LOGO!
Manual, 10/2017, A5E01248535-AA
2
0
1
0
1
Q
1
0
LOGO! functions
4.3 Special Functions
Q
0
1
1
0
113