Recommissioning - Siemens Multi Panel MP270 SIMATIC HMI Equipment Manual

3.2

Recommissioning

Purpose
During recommissioning, the configuration and/or runtime software already
installed on the MP270 is replaced by means of serially downloading another. In
this case, the configuration/runtime software is downloaded from the PC/PU to the
MP270 via an RS232 connection.
There are two ways of setting the MP270 to download mode:
During the start-up phase of the MP270
Duriing normal operation
Switching during the start-up phase
Step
1 Connect the IF2 interface (RS232/) on the MP270 to the PU or PC by means of a
suitable standard cable.
2 Switch on the MP270's power supply.
3 During start-up, press the key combination depicted. The MP270
switches to download mode and waits for data transfer to begin.
If no data transfer is in progress, it is possible to cancel the data
transfer function using the key depicted and continue the boot
process.
4 Start the download operation on the PC or PU to the MP270. The settings
necessary for the download operation on the configuration computer are
provided in the user's guide ProTool Configuring Windows-based Systems .
The MP270 checks the connection to the PC/PU. If the connection is not
available or defective, the MP270 issues the corresponding error message.
If the connection is correct, downloading of the configuration begins. The runtime
software is automatically downloaded with the configuration data.
After downloading has been completed successfully, the MP270 restarts and
displays the start screen associated with the configuration just loaded.
Switching during normal operation
It is also possible to switch to download mode on the MP270 during normal
operation without having to restart the unit. In order to be able to switch to
download mode, the function Change_mode must be assigned to a function key,
button, input/output field or selection field in the configuration.
MP270 Equipment Manual
Release 01/99
Commissioning
Action
3-3