Siemens LOGO! 24L - List of Basic Functions - BF

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LOGO! Manual
A5E00067781 01
4.2 List of Basic Functions – BF
Basic functions are simple basic operation links in Boolean
algebra.
When you enter a circuit, you will find the blocks for basic
functions in the BF list. The following basic functions exist:
Circuit diagram
representation
Representation in
LOGO!
Designation of the
basic function
Series connection
of normally open
contacts
AND
(see page 67)
AND with RLO
edge detection
(see page 67)
Parallel connec-
tion of normally
closed contacts
NAND
(AND not)
(see page 68)
NAND with RLO
edge detection
(see page 69)
Parallel connec-
tion of normally
open contacts
OR
(see page 67)
Series connec-
tionof normally
closed contacts
NOR
(OR not)
(see page 70)
LOGO! Functions