Snap7 + Ni Labwindows/CVI

Question

Hi guys i am working on a project where my client wants to use Siemens S7 1200 to control some pneumatic tools and an interface on labwindows Cvi. I downloaded SP7 ( snap 7) on a try to communicate with my plc but i found myself blocked since the downloaded file contains only a DLL file and a lib file whit no.h file ( header file ) could anyone tell me how to use snap 7 properly on labwindows ?

thanks

Answer 1

AFAIK if you want to use Snap7, you'll have to download the source (C++) and then manipulate it to work with LabWindows.

S7-1200s also have the following communication options.

Free-of-charge:

• Modbus/TCP
• Socket services ("Open user communication")
• MQTT unencrypted

For a fee:

• OPC UA

More here: Communication methods for S7-1200/1500 PLCs

Personal opinion: if you don't have many data points to monitor, I would go with Modbus/TCP.