![]() ![]() I have LabVIEW 2009 now but the main code was written in LabVIEW 8.6. Is there a maximum number of customers mutual funds for an opc server created in this way? I am noto using NI OPC Server (I think) and I'm using DSC noto (obviously) Is there a maximum number of clients to one opc Server opc It could be a much better deal to buy an OPC server or a ready to use the library instead of reinventing the wheel, but of course it depends on your personal situation. Again I have not the slightest idea how complex the DF-1 protocol is to implement. Please refer to the shipping of serial communication examples. Yes, VISA read and write operations are essentially functions, you need to use. Hi, I can connect a controller for labview 7.1 (to send and read the data) without an opc server, using only one cable rs232 of the plc to the pc. If anbody else have the same problem and maybe a solution for this problem? I only change the address of the OPC Server and must import the reactive power. I have this combination of Hard - and Software component (SPS - OPC - PC) which works well on 10 other Test applications. After a restart of the process library, it works fine until the next reboot of the SPS. ![]() Here, I can see that the value of the Variables is "NAN". In the control of the OPC tool, I can see that the OPC server is running and all Variables are very well. It works very well, most of the timeīut after a restart of the SPS it gives reading tower, about 25% of the Variables. These Variables a figure on a HyperTrend a saved in an ASCII file. I have a (Bachmann M1) SPS connected to the PC via an OPC server. OPC Server run only a few Variables - DSC ![]()
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