When Are The Warm Restart And Autoload Features Available - Siemens SIMATIC 6ES7673-2CC40-0YA0 Hardware Installation And Operating Manual

Installing the CPU 41x-2 PCI and the Software
2.3.2

When are the Warm Restart and Autoload Features Available?

Autoload
If the CPU 41x-2 PCI is not connected to an external 24 VDC power supply, you
can use the Autoload feature to load user data.
With the Autoload feature, the PC automatically retrieves a STEP 7 user program
(stored in a file on the memory card) and loads the program onto the CPU 41x-2
PCI following a Power Off/Power On. Then, the CPU 41x-2 PCI automatically
selects the previously stored operating mode and executes the STEP 7 user
program accordingly.
The use of a backup battery, an independent 24 VDC supply, or a Flash Card
precludes the use of the Autoload feature:
•
If you are using a backup battery, the STEP 7 user program is retained after
Power Off/Power On.
•
If you connect the CPU 41x-2 PCI to an independent 24 VDC supply, the
STEP 7 user program continues running or is retained after Power Off/Power
On, depending on the error OB.
•
If you are using a FLASH card, the STEP 7 user program is automatically
loaded from the FLASH card after Power Off/Power On.
Independent
24 VDC
power supply
No
No
Yes
Yes
32
Backup Memory card
battery
No RAM card/none
FLASH card
Yes RAM card/none
FLASH card
No RAM card/none
FLASH card
Yes RAM card/none
FLASH card
Hardware Installation and Operating Manual, Edition 02/2006, A5E00273194-02
Warm restart
possible after
Power On of PC?
No
No
Yes
Yes
CPU continues to
be supplied from
external 24 VDC
power supply!
CPU continues to
be supplied from
external 24 VDC
power supply!
CPU continues to
be supplied from
external 24 VDC
power supply!
CPU continues to
be supplied from
external 24 VDC
power supply!
Windows Automation Center, WinAC Slot Version 4.0
Autoload
feature
available?
Yes
No
No
No
No
No
No
No