@dmroeder Thank you to the great info. I will request that details to the client. How about how can I read the Tags from CLX to VB? what toolbar I need to use to detect the Tags?
Well it depends on what you want to do with the data in the tag. If you simply want to display a value, then the quick start guide walks you through adding a driver, adding a component to display the tag, then setting their properties.
If you want to read the tag in code and do something custom with the data (like log it somewhere), check the end of this and see if it helps:
https://www.advancedhmi.com/documentation/index.php?title=EthernetIPforCLXCom
Hi, Thank you for your guide it help me a lot. But now we try to monitor the Tag using DigitalPanelMeter but we think it is delay. what is the most accurate toolbar to read time to time changes? Thanks
If you are not happy with the update rate of the DigitalPanelMeter, find the driver on your form and look for the property "PollRateOverride", it will probably be a value of 500(ms). As a test, drop it to 0, this will update your DigitalPanelMeter at the fastest possible rate. You probably wouldn't want it at 0 if you have a lot of controls using that instance of the driver. You probably could have 2 drivers, one set to update fast for some objects, the other set to slow for other non critical objects.
Each visual control has a property "ComComponent", which is the driver that the control is assigned to.
Also, there is a better way to read a tag in code that I should have mentioned. I said use a button and use the button click event. If you don't want to interact with the application but have the tag read and used in code, check out the "DataSubscriber" control. It's pretty slick, it subscribes to the tag in the same way that a visual control does, but it provides "DataChanged" and "DataReturned" methods that you can use to do things in code with the value.