I need to Update the PI tag for every 30 sec, what should I use in Equation.Jesse MartinezWilliam Federe
thanks in Advance
1. Need to create a 30s Scan Class in Interface Instance. More Details: PI Interface Configuration Utility
2. Create tag as Polled tag and configure it with 30s scan class (Location4). More Details: PI Interface for OPC DA
To know more about OPC DA interface please refer http://cdn.osisoft.com/interfaces/3424/PI_OPCInt_184.108.40.206a.pdf
Do you need an Analysis or a PI Interface?Please tell us more about your need.
Thanks for Responding. we need to update the Heartbit tag of THEMA 4 software from PI Historian for every 30 sec. So I need to Create the one tag in Historian but I have a doubt in settings that need to be done.do we need any Expression for this ?
Thanks in Advance
You want to write data from the PI Data Archive to an external system named THEMA 4? Which tool are you using to perform this write, or are you asking which tool should be used?
1.THEMA4 is an OPC for Autoclave which will communicate to PI Historian
2.I Want to use PI Historian to write the value 1 for every 30 sec(any time Less than 1Min is also ok) to a tag in THEMA 4 OPC.so I want to create the tag (Main tag)in Historian with scan class 30 sec.is this possible by taking only single tag with scan class 30 sec or do we need to create one more tag additionally for triggering the Main tag based any event.
3.can we use PI OPC Client tool to write the valve for every 30sec? -tried this option but continuous triggering is not possible in PI OPC Client tool.
I need to send value 1 for every 30 sec from PI historian to THEMA4 OPC.
Please suggest the best possible way to do this.
Thanks in advance
There are some very serious security concerns with writing data from PI to an OPC Server, especially if the OPC Server is part of the control system. I'd recommend reviewing the security sections in the same guide you will find the answer to your question:
Retrieving data ...