Using a Meter control in LV Touch Panel, and using shared variables that are custom controls.

[taycar]

I Just started using LV touch Panel module with an NI TPC-2106.

I have two differenct problems:

1) I was planning on using the "Meter" control quite a bit. I can set up the meter exactly how I like on the host PC, but on the touch Panel computer it seems to ignore my adjustments, mainly the start and end of the scale - i.e. I would like control to run from 0 to 360 with 0 straight up, using the entire circle. However, on the Touch panel computer it always puts 0 at about 7 o'clock and 360 at about 5 o'clock. I have also tried adding markers to no avail.

2) I am communicating with a compact fieldpoint controller. I can creat a shared variable that is a simple double with no problems. However, I have some shared variables that use a custom control for the variable type - bascially a cluster with a couble doubles, a time stamp, and an enumeration. It lets me drag the shared variable into my diagram, but it seems to ignore it when I run it.

[Ipshita_C]

Hi,

I can answer the first part of your question. I would post the second question in the Field Point forum which is this one. What version of the Touch Panel Module are you using. Also can you describe what properties you have set up for the meter control?

Ipshita C.

[taycar]

Ipshita_C,

- I am using LV 8.6.1f1and LV Touch Panel 8.6.1.

- I have attached a simplified VI that shows how I want to use the meter. Notice that the placement of the endpoitns does not work correctly on the touch panel, and that it ignores the arbitrary markers that I placed.

- I also have included an XY graph control that displays on the TPC with margins around the graph area that I removed from the graph control.

- For the shared variable, it appears to be an issue related to the touch panel, not fieldpoint. I found another thread in this forum that mentioned that clusters containing Enumerations do not work in shared variables on the touch panel. I changed the enumeration to an integer and it now works fine.

In general, there seem to be a disappointing number of limitations in the touch panel implementation. My biggest concern is that I have not found any documentation from NI that lists these limitations. I seem to have to try things out and see what works and what does not work. Can you point me to a comprehensive list of touch panel modules limitations?

[Ipshita_C]

Hi,

I think this knowledgebase link will help you out considerable and yes, there have been issues with moving the meter control markers. Hope this helps!

Ipshita C.