hypertrend trace sloped or stepped?

[dc@aci]

I am not sure you understand the situation.....

Lets say that a value of 0 is polled from the PLC for 5 minutes

After 5 minutes the next poll from the PLC provides a value of 1.0

The trend should draw a horizontal line for the first 5 minutes at a value of 0 and then after this, draw a vertical line from 0 to 1.0.

The trend does not do this.  It draws a diagonal line from the first 0.0 value at time=0 minutes to  the 1.0 value at time=5 minutes.

This would only happen if the 0 values are not stored in Citadel due to report by exception criteria.

My question, therfore, is how to force Lookout to store the data to Citadel so that the trend correctly represents the PLC data.

[Mike@DTSI]

Using the hypercursor on the trend.  The values between the polls, 0 at 0 minutes, 1 at 5 minutes.  What is the value at 2.5 minutes?

Mike

[dc@aci]

Not at the site

[dc@aci]

I had someone use the hypercursor and provide me the data values during the diagonal trend line.  Yes there are non-zero values during the diagonal trace.  This should not be happening since the pump is off and there is not flow value indicated on the graphic display, LCD display (flow meter) or in the PLC.  The trend response is incorrect.

I have searched for other posts on this and cannot find any.  The version of lookout is 6.0.

Any ideas?

[Ryan.S]

Open MAX, Historical Data->Citadel 5 Universe, create a Trace View, add that trace to display. Then you can "Export to Text". The raw data will be exported to text file. Let's check the actually logged data.

Does this problem happen on every trace or just one trace?

[dc@aci]

It happens on all traces.  I will check Max

[erblock]

I have never seen this happen, but I only Hypertrend data from data tables, never directly from driver objects.

[Ryan.S]

Which driver object do you use?

[dc@aci]

There are two different drivers.  One is OPC.  The other is MOSCAD

[dc@aci]

OK..  Finally received some images of the trends.  They are posted here.  On the first one (mainlines2) you can see that no data is trended when the flow is 0.  On other screens the flow does appear as zero.  When the pumps turn on the and flow begins, the trend draws a false diagonal line from the last non zero point to the current non zero point. 

How do I force the system to save the data to Citadel when it is zero so this will not happen?