Hello-
I have been searching for a few days now and can't seem to get a handle on the number of ways to do this.
I want to simply send data from my PC to two tags on an AB PLC at a slow rate (once per second). Can someone give me some guidance? I thought I was going to just be able to broadcast some info in UDP but boy was i wrong. Any help or guidance would be appreciated.
1 -Looks like NI OPC server is an option but still unclear if I have to use LabView or if I can use the OPC client example in CVI and wing it from there? If all i want the PC to do is send tags to the PLC then isn't the PC the server and the PLC the client?
2 - Looks like Rslinx is another option but not sure if that replaces or still requires NI OPC or if I just use RSlinx. Also not sure if RsLinx might have a dll that is available. Is that true and is that an option?
3 - Looks like I cannot use Ethernet/IP?
I know C and i know CVI. I do not know LabView.
Anything info you can give me will help.
Kind regards,
Blue