Need help writing programmer connect PLC to PC

Dung_AT

Member
D
Join Date
Dec 2006
Location
Ha Noi
Posts
3
Hi, every body!
I have a small project. I wrote programmer control two pump motors by plc s7-300.
Now I want to write programmer connect PLC to PC by using Visual Basic through RS232. I want to illustrate operation state of motors in PC.
How can to write ? Can you show me direction to write programmer by VB ?
Thank you very much !
 

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