Ignition 7.5.6 beta 2
I currently have an easy chart set up showing a single integer tag I am logging from a PLC.
The tag history for the tag is setup the following way
history provider = processdb
historical scanclass = default historical ( 1000ms)
historical deadband = 0
max time between records = unlimited
value mode = discrete
timestamp source = system
My easy chart is set up the following way
chartmode = realtime
Unit Count = 5
Unit = Minute
Tag History resolution = Varies for experiment
When I run the chart and caputure 5 minutes worth of data and my tag
history resolution= -1. I then hit the save data for excel button to save
the datapoints in the trend to excel. When I open up excel i see my data
nice and neat in 1sec increments for 5 minutes.
Back in ignition if I then set the tag resolution to say 5 and save to excel. If i then open up excel I see 10 data caputures. How is this possible when I only said I want 5 captured data points.
What I dont understand further is how come I see different data captured for a single date/hour/minute/second when that is physically impossible because because
I am only capturing data every second.
T_stamp= 7:46:50AM Integer=2686
T_Stamp= 7:46:50AM Integer=29692
I am very confused.
My goal is to be able to save the data to excel in minute increments. 7:46, 7:47, 7:48, 7:49 etc.