Creating a new user-defined datatype
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Open the folder Variables and select
Now all existing datatypes are listed in the
detailview. On the first opening only the pre-defined datatypes
corresponding to the IEC datatypes are in this list. A user-defined
datatype is always based on an IEC datatype. Click into the list
with the right mouse button an in the context menu select
In the dialog opening now enter the name of the user-defined datatype and select an existing datatype. This datatype is a template for the new datatype to be created. Hereby all properties are copied into the new one. They can be changed in the properties window lateron. No reference to the basic datatype, being the basis of the new one, exists any longer.
Finish. The new user-defined datatype
now apperas in the lsit of simple datatypes in the detailview.