Fuzzy Logic eFFL Library in ST

2023-01-16T01:17:28.132000Z

Could you make the library available again?

Fuzzy Logic eFFL Library in ST

2020-02-27T14:29:55.626000Z

Hi,

Maybe you are interested in using CODESYS FORGE platform to release your project on?
As I am myself an enthusiast (not related with codesys) I can really say it's an ideal platform for your work and future endeavors.
Hope to see you soon on https://forge.codesys.com/

Aliazzz

Fuzzy Logic eFFL Library in ST

2020-02-27T14:29:55.176000Z

I don't know why it took me so long to notice. The problem was in the translation of course - i was calling the rebuild method incorrectly:

Incorrect call:
build := THIS^.rebuild(zPoint, zPoint^.next, temp^.previous, temp^.previous^.previous);

Correct call:
build := THIS^.rebuild(aSegmentBegin := zpoint, aSegmentEnd := zPoint^.next, bSegmentBegin := temp^.previous, bSegmentEnd := temp^.previous^.previous);

Since making this correction i haven't been able to generate any exceptions. Please find the revised file (Fuzzy_eFFL_011.project) in the same cloud location as above.

Fuzzy Logic eFFL Library in ST

2020-02-27T14:29:53.743000Z

I have finished translating the eFFL C++ Fuzzy Logic Library () into IEC 61131-3 (CODESYS) ST language. The project file is too large to attach here so I have provided a OneDrive link () with the hope that any interested parties can download it.

The original C++ program was written in Spanish. During the translation process, a few liberties were taken in renaming some of the components and reorganized some of the code for (my) better understanding. You can find the original C++ code, commented out, at the bottom of each module. Note that the library is open-source.

It runs reasonably well, but the advanced example program has thrown an exception or two which I haven't resolved as yet. It looks like the statement "IF temp^.previous^.previous <> NULL THEN" in the FuzzyComposition.build() method (line 16) is allowing a call on the next line when the pointer is invalid. If someone knows how to verify a pointer before using it, I would appreciate knowing how it's done. Apparently, the __TRY/__CATCH exception handler isn't available on the simulation platform.

IF temp^.previous^.previous <> NULL THEN
// result = rebuild(zPoint, zPoint->next, temp->previous, temp->previous->previous); C++ original source
build := THIS^.rebuild(zPoint, zPoint^.next, temp^.previous, temp^.previous^.previous);
END_IF

Recent posts to Fuzzy Logic eFFL Library in ST

Fuzzy Logic eFFL Library in ST

Fuzzy Logic eFFL Library in ST

Fuzzy Logic eFFL Library in ST

Fuzzy Logic eFFL Library in ST