Siemens SIMATIC IPC647E Operating Instructions Manual page 26

Product description
1.4 External design of the device
• The On/off button starts and shuts down the operating system.
You can find information on switching the device on and off under "Switching on the
device (Page 65)" and "Switching off the device (Page 66)".
• The reset button is for the emergency when the device can no longer be operated.
You can find information on the hardware reset under "Switching off the device
(Page 66)".
Alarm reset button with redundant power supply
The alarm reset button is only available for devices with redundant power supply and it is
simultaneously the status display of the redundant power supply (Page 29).
Use the alarm reset button to switch off the signal tone of the redundant power supply in the
event of an error.
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Operating Instructions, 09/2022, A5E52254141-AA
SIMATIC IPC647E