No Visable Trace

[PaulW]

Hi, I'm new to DAQ and been playing for a week or so learing as I go. So I'm pulling data from an old serial york chiller controller and parsing this into numersous channels, so far so good. Data shows up in the channel history but if I look at the graph tab of a channel, setup to collect a value of motor current, no trace is displayed. The axis however would seem to be correct in that the Y axis is scaled around the values recorded in the channel table tab and the X axis is the present date and time.

I have also created a V channel to hold the result of a calculation which again has historical data but if I create a graph object on a page and select the V channel for Y axis data nothing appears. I must be doing something wrong but can't figure it out. any suggestions.

Regards,

Paul

[AzeoTech]

I'd have to see your .ctl document. For the V channel, remember that you have to use v. in front of the name of the channel when referencing it elsewhere in DAQFactory. As for your main channel, I wonder if you have any history.

[PaulW]

Here is the ctl file. Thanks.

DAq Test.ctl

[AzeoTech]

I'm terribly sorry. We did a server migration and your attachment didn't come through (it got caught between the old and new servers). Can you please reattach?

[PaulW]

I think I have found the issue. I had created several channel groups to organise the channels and created the names without an underscore i.e. Chiller 1. Chiller 2 etc. I added the underscore Chiller_1, Chiller_2 and graphs are being plotted for the data.

Thanks.