User Manual V1.1a | XtracontrolEC22
5.3.11 USB
Devices with a USB interface can be connected to the USB host port (Rev. 2.0). Suitable USB device classes are:
CODESYS user: only USB stick
Linux level: USB stick or mouse
Abb. 21: USB interface
Assignment USB interface plug X14
Pin
Assignment
Pin
Assignment
B1
VCC
B3
D+
B2
D–
B4
GND
NOTICE
Damage to USB stick and malfunction due to data loss!
Removing a USB stick while it is still in use and data is being transferred
can render the USB stick unusable. Open files which cannot be accessed
due to removal of the USB stick can block the device.
▶
Therefore ensure that all operations are complete before
removing the USB stick.
NOTICE
Damage to property and malfunctions due to data loss!
The USB interface is protected against overloading (> 0.5 A). In the
event of a short circuit during operation, the control unit may trigger a
reset of the system.
Substantial property damage and damage to the USB device may
ensue.
▶
Before using a USB device, check carefully its power requirements.
NOTICE
Failures and malfunctions when connected directly to signal ground!
▶
Only use USB-devices that do not have a direct connection
between signal ground and housing.
The USB interface plug is designed to withstand 1,000 plugging and unplugging cycles.
Due to the diversity of USB hardware and manufacturers it is not possible for the manufacturer to
test all USB devices.
▶
To avoid malfunctions test the USB device together with the device before putting it into
operation.
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Infranor GmbH