BECKHOFF CP-Link3 - Manual (Page 76)

Page 76
Troubleshooting
Fault Possible cause Solution
A client is not displaying the
image from the host PC, but
the image of the client's
operating system. Faulty network connection.
Faulty configuration. Check the network connection.
Make sure that the network
configuration of the host PC and the
client are correct.
Check the CP-Link 3 configuration
(see also the Client Configuration
section).
The host PC cannot connect to
a client even though the client
is reachable using the Ping
command. Faulty firewall setting on the client.
For CE based clients: Wrong
directory used for installation. Check the firewall settings of the
client (see also the Firewall
Configuration section).
For CE based clients: Always install
CP-Link 3 into the directory
suggested by the installation wizard
(see also the Installation - Client
section).
A client does not show any
image (black screen). A network adapter in the client is
being used both for the CP-Link 3
connection and for real-time
Ethernet. It is not possible to
transmit the “Virtual Graphics” data
via UDP (see also the Comments
section). Change the client's “Virtual
Graphics” data transfer protocol
over to TCP (see also the Client
Configuration section).
Exceptionally slow graphics
performance of a client. The color depth of the client's
display does not match the
corresponding host display color
depth. Adjust the color depth of the client's
display to match the color depth of
the corresponding host display (see
also the Installation - Client section).
The image displayed at a
client is faulty; some parts of
the screen are not updated, or
are updated only after a delay. The network has a poor connection
quality, while the “Virtual Graphics”
data is being transmitted via UDP. Change the client's “Virtual
Graphics” data transfer protocol
over to TCP (see also the Client
Configuration section).
Connection dropouts are
occurring; a client sometimes
shows the image from the host
PC, sometimes the image of
the client's operating system. A network adapter of the host PC is
being used for the CP-Link 3
connection at the same time the
adapter is configured as a TwinCAT
RT Ethernet adapter (see also the
Comments section). Please use TwinCAT 2.11, Build
1552 or newer, beginning with this
version this issue is fixed.
Alternative: The network adapter
may not be configured as TwinCAT
RT Ethernet Adapter. Install the
standard Intel® network card driver.
After touching the client touch
screen a dialog opens with
question "Minimize client
window?" Virtual USB is not activated for this
client. The touch screen is used as
local device. Activate virtual USB for this client. If
needed add HID devices to the USB
Device Blacklist in order to prevent
user inputs from this client. (see also
the Client Configuration section).
On using an Elo touch screen
via "Virtual USB" the mouse
moves, but does not follow the
finger. The touch screen
calibration fails. Elo Touchscreen driver is not
installed on the host PC or the driver
is outdated. Install a recent Elo Touchscreen
driver on the host PC. Run the Elo
alignment program on the host PC.
BECKHOFF CP-Link 3: Appendix