Recent Services Discussions
Similar Posts
Tip #55: Use the Best Technology, Even if the Price Tag Is Higher
Is there any way, to convert .XFC files( export from Continuous Historian) into MS Exel ?
Has anyone tried to interface CHARMS Simulate with DeltaV Operate or even better, with control studio?
Error Message "this pc is not licensed for client-server operation" after a license (dat file) was downloaded.
Is there any way to get the Dump(database) file from DCS with tag name description range and unit (ex. m3/d) for AI block(ex.OUT_SCALE) or PID block ?
Share

Is there a way to observe the outgoing traffic of DV OPC Server or even a Log file?

Hi all,

we have a OSIPi OPC Interface running collecting data in "advise" (If the value changes,  the OPC sends an update of the value) mode from our DeltaV OPC Server. For some tags we are not receiving value updates. Is there a way to observe the outgoing  traffic from the OPC Server to Pi-Node? I was thinking in a log file or something similar in order to check that the OPC is definitely sending the update. Because in the OSIPi Interface log i can´t see an update for the value.

If i request the value with OPC-Remote Tool i can see the updated value, therefore i think there could be a problem with the OPC "sending" the value update. Same if the tag is switched to "polled" (a request to the OPC Server to send an update), i can see the updated value. For Performance reasons i want to use the first explained "advice"- mode.

Greetings

Tobias

Tobias Schneider
  • Walter Wilson
    First, make sure you're not trying to mix advise and polled tags in the same PI interface. There are some discussions in the PI documentation where it describes the location codes.

    Do you have the deadband set properly in DeltaV for the value you are trying to use "advise" updates with? I think PI uses the same deadband as the DeltaV Historian. Pay attention to the units for the deadband setting.

    This is all from memory...
  • Brian Crandall

    In reply to Walter Wilson:

    Unfortunately, there is no logging capability to see what is being sent from the DeltaV OPCDA server. Also check to see if this problem is just for certain types of tags (strings, integers, etc.). Just FYI, we are examining improving the logging capability for the DeltaV OPC Server in future releases to help these types of troubleshooting activities.

This is the official online community site of the Emerson Global Users Exchange, a forum for the free exchange of non-proprietary information among the global user community of all Emerson Automation Solution's products and services. Our goal is to improve the efficiency and use of automation systems and solutions employed at members’ facilities by sharing our knowledge, experiences, and application information.

User Groups | World Areas | Community Guidelines | Legal Information | Privacy Policy | Contact Community Manager

Website translation provided by Website Translator

© 2015-2022 Emerson Global Users Exchange. All rights reserved.