Siemens LOGO! 230 RC - 3.10 Converting a circuit diagram to a block representation

LOGO! manual
EWA 4NEB 712 6006-02
42
3.10Converting a circuit diagram to a block
representation
You create a circuit in LOGO! by connecting blocks and connectors to
each other. Consider the following circuit:
L1
N
S1
Q1
S2
S3
Wiring: You connect the
switches to LOGO!’s inputs:
I1 I2 I3 I4 I5
L1
S1 S2 S3
You convert the circuit to blocks. To do this, you go through the circuit
from the output to the input:
Step 1: At output Q1 there is a series connection of the normally open con-
tact S3 with another circuit component. The series connection corresponds
to an AND block:
I3
x
Q1
&
Step 2: S1 and S2 are connected in parallel. A parallel connection is an
OR block in LOGO!:
I3
x
Q1
&1
I1
I2
x
You have now provided a complete description of the circuit for LOGO!.
Programming LOGO!