LOGO! Manual
A5E00380835-01
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3.5 The four golden rules for operating
LOGO!
Rule 1
Changing the operating mode
You create the circuit program in programming mode.
After power is on, and when the display shows “No Pro-
gram / Press ESC”, press the ESC key to select pro-
gramming mode.
Timer and parameter values of an existing circuit pro-
gram can be edited both in parameter assignment
mode and in programming mode. During parameter
assignment the LOGO! is in RUN mode, i.e. it contin-
ues execution of the circuit program (see Chapter 5). To
work in programming mode, you need to terminate the
circuit program by calling the “Stop” command.
Select the ’Start’ command on the main menu to set
RUN mode.
When the system is in RUN, you can return to parame-
ter assignment mode by pressing the ESC key.
When parameter assignment mode is open and you
want to return to programming mode, select the
“Stop” command from the parameter assignment
menu, and confirm “Stop Prg” prompt with “Yes”. To
do so, move the cursor to “Yes” and confirm with OK.
For more details on operating modes, refer to Appendix D.
Note
The following applies to 0BA2 device versions and earlier:
You can open programming mode by pressing ++OK.
You set parameter assignment mode by pressing ESC+OK.
Pro
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