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Operating and parametrizing
7.2 Normal operation
SIMATIC PC Panel PC 677/877, Control Unit
7-8
Operating Instructions, Edition 04/2005, A5E00407724-01
7.2
7.2
Normal operation
7.2.1
Turning on device
Requirements
•
The I/O modules, e.g. mouse and keyboard, have been connected.
Caution
Using shielded cables and metal connectors for peripherals. Otherwise, the specified
norms and specifications declared by Siemens AG are no longer valid. Secure the plugs
of the interface cables to the PC housing with screws. This improves the electrical
shielding.
Follow the guidelines in the "Ports" section of the chapter "Connecting."
•
The operating system and the service packs have been installed and set up on the hard
disk of the device. For additional information, please refer to the chapter "Starting up" in
the computer unit operating instructions.
•
The pre-installed drivers and applications have been set up appropriately. For more
information, please refer to the chapter "Additional drivers and applications."
•
The proper ambient and environmental conditions according to the specifications for the
device and the connected I/O modules have been observed.
Procedure
Warning
Danger of incorrect operations!
The following applies to external input devices or combinations of external input devices and
control units with key panels: Ambiguous key codes can cause serious malfunctions of the
application program.
Always activate the "Security features" of "KeyTools." Please follow the relevant safety
guidelines in the chapter "Additional drivers and applications."
Caution
If moisture condensation occurs, wait at least about 12 hours before you switch on the
device.
1. Plug the power supply cable of the computer unit into a socket with a grounded protective
conductor.
2. Plug the computer unit into the power switch.
The "POWER" LED will light up. The device is now in operation and booting.
Caution
Danger of data loss!
Do not switch off the power supply when the device is in operation. Disconnect the power
only after the device has been correctly shut down.