Kendrion Econo 206, Руководство пользователя

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Kendrion Kuhnke Automation GmbH Construction and Functionality
Econo ( E 836 GB ) 28
24/06/2020
4.6.4 USB 2.0 (host) (X4), (X5)
The two USB host ports are made for attaching USB peripherals. They provide a max. total current of 0.5 A.
Pin wiring
X4 / X5 USB
Connector Pin Function
USB
B1 VCC
B2 D-
B3 D+
B4 GND
NOTE
USB port overload by excessive power consumption
Machine failure and/or data loss

Only attach USB peripherals whose total power needs do not exceed 0.5 A or supply
external power to the USB peripherals by adding an active hub to the line, for example.
NOTE
Electromagnetic interference in industrial environments
Machine failure and/or data loss

Mind that the USB interface is not designed for use in industrial environments but just as
a service interface for loading software updates or data up into or down from the control
unit.
USB sticks
USB stick users should consider the following points:

The USB port is mechanically designed to support up to 1,000 plug/unplug operations.

Pulling off a USB stick during operation is allowed only when no more file operations are being
performed. Failure to comply may render the USB stick useless!
If a program still has a file open when the USB stick is pulled, you will find it impossible to close the
directory that the file belongs to. In this situation, the system will not respond to any file or directory
operation requests because it would be expected to read from a device that is no longer available.
Therefore, before pulling off the USB stick, you should always ensure that no program still has an
open file loaded from the stick.