Siemens SIMATIC HMI Operating Instructions Manual page 78

Installation and connection
4.7 Connecting the HMI device
Note
You must connect the HMI device to the configuring PC in infrastructure mode. An ad hoc
network is not possible.
Connection graphic
The following figure illustrates the connection between the HMI device and the configuring
PC. You can transfer the following data between the HMI device and a configuring PC:
● Project
● HMI device image
● Additional project data
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The HMI device must be in an area with sufficient WLAN quality. It must be possible for
the configuring PC to be contacted via WLAN.
NOTICE
USB connection sequence
Observe the following sequence when connecting by USB:
1. HMI device
2. PC
USB Host-to-Host cable
Only use the driver for the USB host cable, which is included in the WinCC flexible
package. Never use the driver supplied with the USB Host-to-Host cable.
Mobile Panel 277F IWLAN
Operating Instructions, 12/2007, A5E01003940-01