The following diagram shows the relationship between Signal List Tool, the Signal List, CODESYS, LDSWin,
the controller, the system centre, the associated files 1 to 6 and the communication paths.
The files 1 to 5 correspond to the source code files from the table on the previous page. The Signal List Tool
generates the source code files 1 to 5 from the Signal List, which are read into CODESYS using the import
function and are then available to the developer for the creation of the application. The file 6 "GLT.cfg" is read
into LDSWin and transmitted to the system centre via the serial interface, the CAN bus or TCP/IP. This allows
the system centre to archive the values of selected data points and transfer them to LDSWin for visualisation.
The runtime system of the controller, that is connected to the system centre via the CAN bus, automatically
sends alarms to the system centre, among other things. In the Signal List, a potential-free contact can be
directly integrated as a PRIOn alarm with the corresponding message text without any programming effort. The
alarms program code generated by the Signal List Tool, see (3) in the diagram above, is imported into
CODESYS and all alarms are included in the program code.
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