Siemens LOGO! - NOT (Negation, Inverter); Table of the NOT Logic; Table of the XOR Logic; XOR (Exclusive OR)

123
LOGO! Manual
A5E00380835-01
4.2.7 XOR (exclusive OR)
The XOR in a circuit diagram,
shown as series circuit with 2
changeover contacts:
Symbol in LOGO!:
The output status of the XOR is 1 if the inputs are not
equivalent.
At an unused block input (x): x = 0.
Table of the XOR logic
12Q
0 0 0
011
101
110
4.2.8 NOT (Negation, Inverter)
A break contact in the circuit
diagram:
Symbol in LOGO!:
The output status is 1 if the input is 0. The NOT block in-
verts the input status.
Advantage of the NOT block, for example: The LOGO!
does not require break contacts. You simply use a make
contact and the NOT block to convert these into a break
contact.
Table of the NOT logic
1Q
0 1
10
LOGO! functions