The First Circuit Program - Siemens LOGO! Manual

Programming LOGO!
3.7 Writing and starting the circuit program
You are now in programming mode. Press
edit your circuit program.
Note
Because we have not yet saved a password for the circuit program in LOGO!, you can
directly enter editing mode. When you select "Edit" after you have saved a password-
protected circuit prgram, you are prompted to enter a password and to confirm it with OK.
You can only edit the program after you have entered the correct password (Page 76).
3.7.2

The first circuit program

Let us now take a look at the following parallel circuit consisting of two switches.
Circuit diagram
The corresponding circuit diagram:
Translated into a LOGO! circuit program this means: Relay K1 is (at output Q1) is controlled
by means of an OR block.
Circuit program
S1 is connected to the I1 and S2 to the I2 input connector of the OR block.
The corresponding layout of the circuit program in LOGO!:
70
and to select the other outputs. Now start to
Manual, 10/2017, A5E01248535-AA
LOGO!