Posted 19 Dec They may not even be available or may not be required in version 7. I am not familiar with ver 7. It’s available as a free 30 day demo here: It can automatically scan and find devices if you want it to, and that takes a lot of the configuration out of the way. I am not sure if i got all the configurations right for my citect portion. That your tag syntax is correct Note:
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Citect OPC Client Connecting
Hi All, I am new to Citect 7. This measured time cietct usually insignificant compared with the cliejt response time from the PLC. Question The OPC specification uses tag names rather than physical addressing to request the value of a tag.
How does this affect the performance in Citect? 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.
While the exception reporting nature ciect the Citect OPC Client and the Server reduces or negates this concern at this point, performance may still be degraded at two places: 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.
Is there any possibility to use the Access path in Citect? Then check the Citect. This means that the response times citec in Citect for the standard drivers eg.
How to connect an OPC client to your multi-cluster SCADA project
Posted 18 Dec Question I have a customer who tries to connect to an OPC Server and they always get the error. Sign In Sign Up. That the OPC Server can connect to the end devices.
Some frequently asked questions are listed below. The OPC specification isn’t exactly clear as to whether it is ditect 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.
It’s available as a free 30 day demo here: That your tag syntax is correct Note: Share this post Link to post Share on other sites. With this in mind, Ci Technologies suggest that an OPC Server should handle the case where an access path is not specified.
Answer When Citect reads tags from a PLC, it is sometimes quicker to request a block of tags which includes several of those needed by Ictect. Question Do the ‘Response times’ shown in the Citect kernel eg.
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. Posted 19 Dec Sign up for a new account in our community. This seems to indicate that the tag address has an incorrect item id, but the correct value has been entered. It can automatically scan and find devices if you citcet it to, and that takes a lot of the configuration out of the way.
Wow, that’s an ambiguous error.
Posted 24 Dec You could use it to opv to the OPC Server and verify: 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. Started by jaxrpc18 Dec I am not familiar with ver 7.
Register a new account. See KB Article Q