Siemens SIMATIC HMI KP400 Comfort Operating Instructions Manual page 52

Mounting and connecting the HMI device
3.3 Connecting the device
Note
You can also connect the HMI device to the configuration PC via PROFIBUS. But the
transmission rate may result in extremely long transfer times.
Information on the USB type Mini-B interface
Note
USB type Mini-B interface only suitable for commissioning
The USB type Mini-B interface is not intended for connecting peripheral devices.
The USB type Mini-B interface may be used for commissioning and maintenance only.
USB 2.0 certified cable required
If you use a USB cable which is not USB 2.0 certified, errors may occur during data
transmission.
Use only USB cables that are labeled "Certified HI-SPEED USB 2.0".
USB cable length maximum 1.5 m
USB cables with lengths of more than 1.5 m do not ensure secure data transmission.
The cable length of the connected USB devices may not exceed 1.5 m.
Procedure
Proceed as follows:
1. Switch off the HMI device.
2. Switch on the configuration PC.
3. Comfort V1/1.1 devices: Connect the HMI device to the configuration PC using either the
PROFINET (LAN) interface or the USB type Mini-B interface. Please note the following
for USB connection:
– Connect the USB Mini-B connector of the USB cable to the USB type Mini-B interface
– Connect the USB A connector of the USB cable to a free USB interface of the
Comfort V2 devices: Connect the HMI device to the configuration PC via the PROFINET
(LAN) interface.
4. Switch on the HMI device.
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of the HMI device.
configuration PC.
Operating Instructions, 07/2017, A5E36770603-AB
Comfort Panels