Prepare and backup project
7.3 System settings
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
7-13
7.3.2 Set operating mode
Conditions for changing operating modes
In order to switch the HMI device between the operating modes described below, the
relevant function must be linked to an operating element in the configuration.
Operating modes
The HMI device is designed for the following operating modes:
• Offline mode
• Online mode
• Transfer mode
The operating modes "Offline" and "Online" can be adjusted in the system and can be
executed by means of a configured object. The function of transfer mode can only be
configured as an operating element.
Offline mode
In this mode, there is no communication connection between the HMI device and PLC. The
HMI device can be operated but data cannot be downloaded or received by the PLC.
Online mode
In this mode, a communication connection between the HMI device and PLC exists. When
using this mode, processes in progress can be operated and visualized without restriction.
Transfer mode
This operating mode is used to transfer a project from the configuration computer to the HMI
device.
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