Line chart

[StefanA]

I would like to add a line chart to my Advanced Hmi screen. The data points on the chart would represent different Modbus holding regeisters.  Is that possible to do without being a VB expert?

// Stefan

[qwideman]

That shouldn't be too complicated, but you will need to write some code.
It doesn't take too long to learn to use a bit of VB...

First, using AdvancedHMI controls, make sure you have the correct MODBUS addresses (this took me some time - PLCs vary widely)
Basically you need to set up several datasubscribers, when there is a change you update your graph:

Private Sub DataSubscriber2_DataChanged(ByVal sender As System.Object, ByVal e As MfgControl.AdvancedHMI.Drivers.Common.PlcComEventArgs) Handles DataSubscriber1.DataChanged,DataSubscriber2.DataChanged, DataSubscriber3.DataChanged, DataSubscriber4.DataChanged
'This fires an event every time your data changes. Use this space to update your graph.
End Sub

Hope this gets you started.

Quinton Wideman
Rolan Inc

[Archie]

Following Quinton's lead, you then add a chart to your form from the ToolBox. In the event handler, add this code:

Chart1.Series(0).Points.add(e.values(0))

[StefanA]

Thanks for the info. Does anyone know about a good introduction to VB? I think I have to get some basic knowledge before I can use your code suggestions.

[dmroeder]

Youtube has been a good source for me.  There are a lot of people with good tutorials.

[Archie]

Check the News section of the web site. There is a link to some good tutorials by Microsoft.