Operating instructions

Commissioning a project

7.2 Operating modes

MP 377, MP 377 PRO (WinCC flexible)

160 Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0

7.2 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 configuring PC and the HMI

device. To set these modes on the HMI device, use a corresponding operating element

of the project.

Changing the operating mode

The configuration engineer must have configured an appropriate operating element 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 configuring PC 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 operating element. The

HMI device toggles to "Transfer" mode when automatic mode is set and a transfer is

initiated on the configuring PC.