Beckhoff CP-Link3 Manuel d'utilisateur télécharger pdf (Page 55)

Page 55

Set the HID focus manually

A description of how the HID focus can be set manually follows (see also Client Configuration - HID-Focus).

Note

Basic knowledge required

Setting the HID focus manually presupposes basic knowledge of how to use the

TwinCAT system.

The following illustration shows schematically the host PC components involved in setting the HID Focus manually:

The driver for the “CP-Link 3 Remote Port Enumerator” has an interface through which the HID focus can be set to a

specific client. The HID focus can also be reset through this interface. The driver's interface is indirectly accessible via

ADS, i.e. through an ADS server that is implemented in the “CP-Link 3 Service”. The interface can therefore be used

from the TwinCAT PLC as well. Use is simplified by a PLC library. The PLC library contains the

FB_CPLink3_AcquireHidFocus function block, which is used to set the HID-Focus to a specific client. The corresponding

example program illustrates how the FB_CPLink3_AcquireHidFocus function block can be used. Both the example

program and the library are placed, when CP-Link 3 is installed, in the program directory in subfolder Plc ( for

TwinCAT 2: TcCPLink3.lib and CplHidFocusSelect.pro, f or TwinCAT 3: Tc2_CPLink3.compiled-library and

CplHidFocusSelect.tpzip).

BECKHOFF CP-Link 3: Miscellaneous

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Beckhoff CP-Link3 Manuel d'utilisateur Page 55