Hi Moelsayed,
in FAQ-area it's not possible to reply.
Libnodave
1. download Libnodave package from
http://libnodave.sourceforge.net/
2. unzip Libnodave package
3. copy libnodave.dll to C:\WINDOWS\system32
4. take a look into the unpacked files - in folder "doc" you will find documentation, start with index.html
5. take a look into the folder "Excel And VB", open Modul12.bas with notepad.exe and read
(6. you can copy the Modul12.bas into your xls-file: open Excel + open Extra > Macro > Visual basic editor (or so) + file > file import)
Excel example
7. go to
FAQ: Programmbeispiel für EXCEL 64-Bit und 32-Bit and download the attached file Tankanzeigen_mit_Libnodave_64.xls.zip
8. unzip
9. open the Tankanzeigen_mit_Libnodave_64.xls
10. go to sheet "Tanks" with an example for connect to S7-300 via CP343-1 or the PN-interface of CPU
11. change the red IP-address to IP of your PLC
12. put a DB123 with at least 8 REAL-variables in your PLC and manipulate the values in range 0.0 ... 40.0 or 65.0
13. click the button [Werte aus PLC lesen] --> this call the Sub readFromFAFM() in Modul10 --> this will read DB123.DBB0...DBB23 from the PLC and show in chart
14. read Modul10. there are short descriptions at the 32-Bit declarations. 64-Bit declarations are without description - see 32-Bit
Harald