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CITECT OPC CLIENT DRIVER

That the OPC Server can connect to the end devices. It may be that an OPC Server allows items to be specified in a format similar to the native addressing format of the device, though this is not necessarily the case. Started by jaxrpc , 18 Dec This seems to indicate that the tag address has an incorrect item id, but the correct value has been entered. This is because each request has a specific overhead in time independent of how many tags are being requested, so by making one larger request instead of many smaller requests reduces the average overhead per tag. See this web site for further information:
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I am not sure if i got all the configurations right for my citect portion. This is because each request has a specific overhead in time independent of how many tags are being requested, so by making one larger request instead of many smaller requests reduces the vitect overhead per tag.

OPC Explorer is not a replacement for Citect, it's just used for testing. Then check the Citect.

Posted 24 Dec By using tag names to access the value of a tag, Citect cannot logically 'block' several requests into one citwct and so the overhead cannot be eliminated. As Citect cannot block individual requests when using tag names to access the tags values, each Citect Client will request each tag individually across the network. We have a large project in version 6.

Share this post Link to post Share on other sites. This means that the response times shown in Citect for the standard drivers eg. This measured time is usually insignificant compared with the actual response time from the PLC.

This will signifcantly load the network and have a corresponding affect on the performance of the Citect system as a whole. The OPC specification isn't exactly clear as to whether it is cirect for the OPC Server calls to fail if an access path is not specified, but it does go as far as saying that by "convention" a server should select an access path if one is not provided.

Citect OPC Client Connecting

Posted 19 Dec Sign In Sign Up. Question What is OPC? Create an account or sign in to comment You need to be a member in order to leave a comment Create an account Sign up for a new account in our community. You could use it to connect to the OPC Server and verify: Started by jaxrpc18 Dec Some other method of comparing the drivers should be used.

Answer The Access Path is a server specific option that is intended to allow the client to provide a 'recommendation' to the server regarding how to get to the data. Wow, that's an ambiguous error.

Citect OPC Client Connecting - HMI & SCADA -

I am listing the configurations, hope those who are familiar can verify it for citdct thanks. It can automatically scan and find devices if you want it to, and that takes a lot of the configuration out of the way.

As I said earlier these settings worked for OUR project in version 6. Sign up for a new account in our community. That your tag syntax is correct Note: I am not familiar with ver 7. That the OPC Server can connect to the end devices.

Q Citect OPC Client FAQs

With this in mind, Ci Technologies suggest that an OPC Server should handle the case where an access path is not specified. It's available as a free 30 day demo here: They may not even be available or may not be required in version 7. Register a new account.

Posted 18 Dec edited. While the exception reporting nature between the Citect OPC Client and the Server reduces or negates this concern at this point, performance may still be degraded at two places:

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