Comm with a Modicon PLC

[kseifert]

I am supplying a Modicon PLC for a project and the spec's call for the PLC to be "web accessible for use with LabView".

What interface (communication) port and/or software will I need to supply with the Modicon PLC to meet this requirement?

[Khalid]

Does it have to be "web access"?  Or, remote, network access will do?  If it's the latter, then you can supply an OPC Server with your PLC.  LabVIEW can then remotely connect to it using the OPC protocol. 

If it has to be "web access," then I am not sure.  I guess you somehow have to make the PLC available as a Web Server.  In which case any Web browser can look at whatever's being published.  Not sure why one would use LabVIEW in such a situation. 

Hope this gives you some ideas.

-Khalid

[cosmin]

Hi,

from what I know, the Modicon PLC,s does not have built in web servers. For reading and writting variables, you can check out the OFS server (opc server from Schneider Electric for their PLC's) which I succesfully used, some time ago, with a Modicon PLC.

cosmin

[preston_johnson]

Since LabVIEW has a webserver built in, connecting LabVIEW to the PLC with an OPC server (several included with LabVIEW DSC packages), you can create a display for the web and use the built in LabVIEW web server to provide a webserver for the Modicon PLC.

[kseifert]

Thank you all for your help. I will post an update soon.

Kevin