Operating the Controller - CPU 41x-2 PCI
Windows Automation Center, WinAC Slot Version 4.0
Hardware Installation and Operating Manual, Edition 02/2006, A5E00273194-02
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4.2.3
Enabling a Warm Restart after Power On
You can specify that the CPU 41x-2 PCI perform a warm restart after power on.
When a warm restart is performed, the controller executes OB 100 and starts the
user program from the beginning.
Retentive data and the contents of data blocks are retained.
For the controller to execute a warm restart, the following conditions must be met:
•
The CPU 41x-2 PCI has a backup battery.
•
Warm restart is configured in the Object Properties for the CPU 41x-2 PCI in
STEP 7.
4.2.4
Enabling a Hot Restart after Power On
You can specify that the CPU 41x-2 PCI is to perform a hot restart after Power On.
When a hot restart is performed, the controller executes OB 101 and reads the
process input image and then continues processing the user program at the
location where it was last stopped (due to STOP or Power Off).
Retentive data and the contents of data blocks are retained.
For the controller to execute a hot restart, the following conditions must be met:
•
The CPU 41x-2 PCI has a backup battery.
•
"Hot restart" is configured in the object properties for the CPU 41x-2 PCI in
STEP 7.
