Download TP 277, OP 277 (WinCC flexible) - Service, Support

Commissioning a Project
7.2 Operating Modes
Commissioning and Recommissioning
• When the HMI device is commissioned there is no project at first.
The HMI device is also in this state after the operating system has been updated.
• When recommissioning, any project already on the HMI device is replaced.
Operating Modes
Operating Modes
The HMI device may be in the following operating modes:
• Offline
• Online
• Transfer
"Offline mode" and "Online mode" can be set on both the configuration computer and the
HMI device. To set these modes on the HMI device, use a corresponding operator control of
the project.
Changing the Operating Mode
The configuration engineer must have configured an appropriate operator control to allow a
change of the operating mode on the HMI device during ongoing operation.
Further information on this may be available in your plant documentation.
"Offline" Operating Mode
In this mode, there is no communication between the HMI device and PLC. Although the
HMI device can be operated, it cannot exchange data with the PLC.
"Online" Operating Mode
In this mode, the HMI device and PLC communicate. You can operate the plant on the HMI
device according to your system configuration.
"Transfer" Mode
In this mode, you can transfer a project from the configuration computer to the HMI device or
backup and restore HMI device data, for example.
The following options are available for setting "Transfer" mode on the HMI device:
• When the HMI device starts up
Start "Transfer" mode manually in the HMI device Loader.
• During ongoing operation
Start the "Transfer" mode manually within the project using an operator control. The HMI
device toggles to "Transfer" mode when automatic mode is set and a transfer is initiated
on the configuration computer.
TP 277, OP 277 (WinCC flexible)
Operating Instructions, 09/2007, 6AV6691-1DH01-0AB0