LOGO! Manual
A5E00380835-01
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You can also memorize four simple rules for starting
LOGO! :
1. If neither the LOGO! nor the inserted program module
(Card) contains a circuit program, the LOGO! (with
display unit ) reports: ’No Program / Press ESC’.
2. A circuit program on the program module (Card) is
automatically copied to LOGO!. The circuit program in
the LOGO! is overwritten.
3. If there is a circuit program in LOGO! or on the program
module (Card), LOGO! adopts the operational state it
had prior to POWER-OFF. Versions without display unit
(LOGO!...o) automatically change from STOP to RUN
(LED changes from red to green).
4. If you have enabled retentivity at least for one function,
or a function is permanently retentive, the current values
are retained at POWER-OFF.
Note
When a power failure occurs while you are entering a
circuit program, the program in LOGO! will be deleted after
power is returned.
Before you modify the circuit program, you should
therefore save a backup copy of your original to a program
module (Card) or to a computer (LOGO!Soft Comfort).
LOGO! installation and wirin
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