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LOGO! manual
EWA 4NEB 712 6006-02
3.11.4 Second program
We use the second program to show you:
S How to insert a block in an existing program
S How to select a block for a special function
S How to enter parameters
In order to produce the second program, we modify the first one.
Let’s begin by looking at the circuit diagram for the second program:
You know the first part of the cir-
cuit already. Switches S1 and S2
operate a relay. The relay switches
on consumer E1 and switches it off
after a delay of 12 minutes.
L1
N
S1
S2
K1
K1 E1
In LOGO!, the program looks like this:
1
Q1
I1
I2
x x
T
This is
the new
block
You will recognize the OR block and the output relay Q1 from the first
program. Only the off-delay is new.
You modify your first program as follows:
Switch LOGO! to editing mode.
To do this, proceed as follows:
1. Switch LOGO! to programming mode
(by pressing the , and OK keys simultaneously)
2. Select ”Program..” from the main menu
(by moving ’>’ to ”Program..” and pressing the OK key)
3. Select ”Edit Prg” in the programming menu
(by moving ’>’ to ”Edit Prg” and pressing the OK button)
You can now modify the existing program.
Programming LOGO!
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