OPCLink reports that the Status is GOOD but that there are errors. But, I don't get any value returned, (MI1 is actually the system clock seconds, (I'm using a Store Block to move SI 30 into MI 1) and is on display on the PLC screen, updating constantly). I see the Event message 'New Client Connected', and 'Added New Item PLC1.iMI1'. In both cases, I see evidence in UniOPC that part of the system works. 'PLC1.' and NO dot in the middle of the PLC address for the tag, e.g.
'PLC1' and a tag of 'i.MI1' and the other way using an additional dot at the end of the PLC Name e.g. I have set my tag addressing both ways, one using a PLC Name of e.g. I have used the InTouch/UniOPC configuration document that outlines how to set up OPCLink and InTouch to communicate. I am communicating with the PLC via TCP/IP and I am able to download and program the PLC with no difficulty. I'm using UniOPC, the latest version available from Unitronics, the website. I have InTouch/Wonderware Version 9.0, and OPCLink 8.0.
I have a Vision 350 PLC and a Dell Latitude D520 laptop running the latest version of VisiLogic on XP Professional SP2.
