Start-up behaviour
69
04/99 AWB 2700-1311 GB
Start-up behaviour The PLC can either be cold started or warm started:
Cold start
A cold start causes all the data fields (marker areas,
inputs/outputs, module parameters) to be reset.
Recipe markers are retained, however. The user
program is executed again from the beginning.
A cold start can be initiated as follows:
By pressing the “reset” button if the operating
mode selector switch is set to “Run M reset”,
provided that the PLC is set to either “Ready” or
“Not Ready”;
By switching on the power supply if the operating
mode selector switch is set to “Run M reset”;
Using the programming software on the PC,
provided that the PLC is currently set to either
“Ready” or “Not Ready”.
A cold start must always be carried out after
transferring a user program to the PLC.
Warm start
A warm start causes the user program to be
continued from the point at which it was interrupted
to the end of the cycle. The outputs and
communication data are set to “0” for the remainder
of this cycle. The PLC is then initialised and the
program is executed. Retentive markers and
variables are retained.
The procedure for setting retentive marker areas is
described in the “Sucosoft S 40 user interface”
manual (AWB 2700-1305-GB):
H1311g.bk Seite 69 Freitag, 4. Juni 1999 1:12 13
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