L-INX User Manual
274
LOYTEC
Version 4.0
LOYTEC electronics GmbH
Figure 227: Adding global variables to Functionplans
After adding function blocks that perform the expected work, the IEC61131 program is
ready to compile and download, refer to section 12.4.2 for details.
12.5.3 Pre-compiled IEC61131 Program
In opposite to the last two chapters it is assumed that there are already some components
finished, hence starting up from scratch is not suitable. Second, there is the possibility to
have an already defined IEC61131 program or an already fixed network interface.
Starting with an already precompiled IEC61131 program results in a similar workflow as
presented in section 6.4.2. The difference is that all logiCAD related tasks are missing. As
the IEC61131 program is compiled, the name of the IEC61131 data points is already fixed.
The definitions for the data points must be available either in form of a CSV-file to import
to the LINX Configurator or as prepared project for the LINX-110 configuration tool. If the
network interface for the LINX-110 was not already defined the LINX Configurator can be
used to generate and connect the CEA-709 data points.
Additional, there is the possibility that also the CEA-709 data points are already fixed or a
user defined interface is necessary. Then the developer has to connect the IEC61131 data
points to the corresponding CEA709 data points by himself, see section 6.10 for details.
Finally, after downloading the configuration and rebooting the LINX-110, the IEC61131
program can be downloaded to the LINX-110 via the WEB UI or the LINX Configurator.
After a final reboot the LINX-110 loads and executes the IEC61131 program.
12.6 Additional features
12.6.1 Force Update Functionality
Per default the IEC61131 program only sends updates on changed output values. Every
program cycle the input values are fetched, the IEC61131 program is executed and the
calculated values are sent to the output driver. If the old values are identically with the new
one no updates are sent to the IEC61131 data points. As a result no update is sent to the
network.
