User Manual

Programming LOGO!
3.7 Writing and starting the circuit program
LOGO!
82 Manual, 06/2014, A5E33039675
3.7.7
Second circuit program
Up to this point, you have successfully created your first circuit program, assigned it a name,
and optionally a program password. In this section you will learn how to modify existing
circuit programs and how to use the special functions.
Using this second circuit program, you will learn how to perform the following tasks:
● Add a block to an existing circuit program
● Select a block for a special function
● Assign parameters
Modifying circuits
You will use the first circuit program as a basis for the second, with some slight
modifications.
First of all take a look at the circuit diagram for the second circuit program:
This is the circuit program layout in LOGO!:
You can see the OR block and the output relay Q1 that you used in the first circuit program.
The only difference is the new off-delay block.
Editing the circuit program
Follow these steps to edit the circuit program:
1. Switch LOGO! to programming mode. For additional details, see the topic "The four
golden rules for operating LOGO! (Page 61)".
2. On the main menu, move the cursor to "
①": Press or