Siemens CPU 948 User Manual

Aborting a cold restart You can abort an active COLD RESTART only by changing the mode
selector to STOP or by switching off the power. If you abort a COLD
RESTART you must repeat it.
4.3.2
MANUAL and
AUTOMATIC
WARM RESTART
When is a WARM RESTART
possible and permitted?
A MANUAL WARM RESTART is only possible after stoppages
caused by the following:
•• the mode selector was changed from the RUN position to the
STOP position,
•• a stoppage in multiprocessor operation caused by the HALT signal
from the coordinator,
•• POWER OFF, with the appropriate setting in data block DX 0,
•• PG function PLC STOP.
Note
If the stoppage was caused by an event other than those listed
above, then no warm restart is possible. The system program
will only permit a COLD RESTART.
A MANUAL or AUTOMATIC WARM RESTART is only
permitted when
•• the user program was not modified during the stop mode
and
•• a COLD RESTART is not necessary for other reasons (refer to
Section 4.4.1).
START-UP Mode
CPU 948 Programming Guide
4 - 18 C79000-G8576-C848-04

Siemens CPU 948 Specifications

General

Brand	Siemens
Model	CPU 948
Category	Controller
Language	English