I am using LabVIEW 8.6 to read/write to the PLC (Allan Bradley 1100) using the OPC server provided by RSLogix 500. I found an existing VI for monitoring multiple PLC tags (Multiple OPC Items Monitor) and it works if I use selection of the items option. However, I was trying to change the list of predetermined items and I have trouble figuring out the syntax for the URL. I also don't understand how the URL differs from a file path constant and was wondering if there was a way to convert.
I checked the link and I'm still not sure if what I have is correct. The link states:
By my logic what I want should look like:
opc://RSLinx OPC Server/RTTA/Online/F8/F8:1
RTTA, online, and F8 being folders
When I use the above stated URL I get an error message stating that it can not read items.
I appreciate any help you can offer.