1 Description of the Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-…
1.6 Functionality
Modular PLCs XControl: XC-104-…, XC-204-…, XC-303-… 01/23 MN050005EN Eaton.com 21
1.6.4 Device interfaces
1.6.4.1 USB host 2.0
Only one USB storage device can be used at a time. This applies even if
using a USB hub would make it possible to use multiple USB storage
devices, for example.
The output voltage is protected from overloads.
CAUTION
INTERFERENCES
The values specified in the technical data, as well as the
device's electromagnetic compatibility (EMC), cannot be guar-
anteed if the following are used: unsuitable cables, improperly
assembled and terminated cables, and/or wiring that does not
conform to the applicable standards. Only use cables assem-
bled and terminated by professionals.
The cables being used must be assembled and terminated as
required by the port/interface description in this document.
When wiring the devices, follow all instructions regarding how
to wire the corresponding port/interface.
All general Directives and standards must be complied with.
CAUTION
NON-GALVANICALLY-ISOLATED INTERFACES
The device may be damaged by potential differences.
▶ The GND terminals of all bus modules must be connected.
▶ Do not connect the connector to the device or disconnect it
without first de-energizing the system.
→
High loads on CPU resources can result in functional limitations.
If device access through the programming system is limited due
to the load on the device, interrupt the program sequence by
switching the RUN/STOP switch to STOP.
→
The USB interface for XC-104-…, XC-204-… devices needs to
be activated before the first time it is used – please refer to
→ Section “3.2 USB interface activation for XC-104-… and XC-
204-… devices”, page 53.
→
Please note that the maximum current load for the USB inter-
face on the XC-303-… is 100 mA
and that the maximum current load for the USB interfaces on
the XC-104-… and XC-204-… is 500 mA.