USER HANDBOOK 1.0 | B-PRIMIS ET-PRO SERIES
Berghof Automation GmbH | Arbachtalstrasse 26 | 72800 Eningen | Germany | www.berghof-automation.com
S_B-Primis_ET-Pro_DE_1_0_EN_neu.docx
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5.2.3. USB
Devices with a USB interface can be connected to the USB host port (Rev. 2.0). Suitable USB device
classes are:
CODESYS user: USB thumb drive only
Linux level: USB thumb drive or mouse
Fig. 25: USB interface X3
Assignment of the USB interface plug X3
Pin
Assignment
Pin
Assignment
B1
VCC
B3
D+
B2
D
–
B4
GND
NOTICE
Damage to the USB thumb drive and malfunctions due to data loss!
Removing a USB thumb drive while it is still in use and data is being transferred can render the USB thumb
drive unusable. Open files which cannot be accessed due to removal of the USB thumb drive can block the
device.
Therefore, ensure that all data operations are complete before removing the USB thumb drive.
NOTICE
Property damage and malfunctions due to data loss!
The USB interface is protected against overload (> 0.5 A). In the event of a short-circuit during operation,
the controller can trigger a system reset.
This can result in considerable damage to property and damage to the USB device.
Before using a USB device, check its power consumption.
NOTICE
Failures and malfunctions when connected directly to signal ground!
Only use USB devices that do not have a direct connection between the signal ground and the hous-
ing.
