Here is my scenari0 (using IOServer, OPC Server) to link with a PLC (could be a serial device instead, does not matter). I am reading in data at a high rate, but my app acts on that data (in an event-driven program). If this event takes too long, it will not release in time to grab the next value from the PLC or other device. The CPU can only do one thing at a time. If you have multiple processors (which hypertheading simulates), you should be able to simulaneously read in OPC tags and perform the apps internal events at the time. I did not say the PLC would be effected. But the OPC server can be (I have had to deal with this).
I do my programming in VB, not WonderWare. I don't do ladder logic (guess I am not smart enough to program the actual PLC
).
I do my programming in VB, not WonderWare. I don't do ladder logic (guess I am not smart enough to program the actual PLC
).
