RSLinx OPC Server seems to choke every so often with an error along the lines of "failed to read from controller at." or "timed out reading from controller at." When this happens, we get a general slow down (its a massive performance hit but because of the size of the server it doesn't actually crash it). The second half of the problem occurs with the latest generation Logix CPU we have. RSLinx slowed down to a crawl, would not create new groups (reads) or perform writes while it was eating up CPU apparently trying to make sense of the orphaned ControlLogix CPU. The first half of the problem occurred when a ControlLogix CPU was powered down. We do a lot of OPC read / write work over DA-2, and for everything except ControlLogix CPU's, this is not an issue. Server has 4 GB memory DDR 1066 memory / 4 Intel Xeon 2.53 GHz cores / and SAS 15k RPM hard drives in Raid Mirror.
#Rslinx classic lite opc server windows#
RSLinx Classic Gateway (aka Professional) OPC Server version 2.57 (latest I believe), running on Windows Server 2003 R2 Service Pack 2 32-bit (also had this on Windows XP Service Pack 3 32-bit and it behaved the same way). If your Excel sheets use VBA to get values via OPC, then you'd just have to alter the VBA to connect to your RSLinx Gateway Server and set your DCOM configuration.Hello, Not often one to ask for help, but here's a real kicker. I'm thinking that your Excel sheets probably use DDE which only works within the local operating system, which is why your previous installations of RSLinx worked fine. Does your Excel sheet contain actual OPC-related VBA code? Or is it using DDE and you see something like this in the cells?: See here: and DDE are two different things also. You should be able to get online with PLCs using Lite via a Gateway, but DDE or OPC won't working without a real license. RSLinx Classic ite does not support DDE or OPC, and connecting through an RSLinx Gateway Server has no effect on this limitation. I think there's just a bit of confusion about RSLinx versions and what they can do. Please click "report" on spam Related sub-reddits:
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