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Question/Problem
Setting up trends on lifts RSlogix
Environment
- Go online with
the PLC. In this case we are going online with CP45 at Starbucks in York,
PA.
- Navigate to the bit you want
to trend. For this we will trend the LIFT_InLow_SOFT_RESET bit. This is found in the _011_In_Lower_Sequence routine on rung 20.
- Right click the
tag and select Trend "LIFT_InLow_SOFT_RESET
- The Trend window will
display. Right click on the graph and select Chart
Properties.
- From the
properties, navigate to the Display tab and select Display
milliseconds.
- Move over to the
X-Axis tab and change the Time span to 2 minutes then
select OK.
- After the
properties window closes select STOP in the top left hand corner.
- Right click the
graph again and select chary properties. Go over to the sampling tab and set the Sample
Period to
2 milliseconds.
- Go over to the Pens
tab and
use the scroll bar to scroll over to the Min and Max values for the
tag that's being trended. The data type will depend on the value that we
use here. Since this first tag is a bool we will set the min to -0.1 and
the max to 1.1.
- Go to the Y-Axis tab and select Preset then from the
display options check Isolated graphing.
- Select Apply if
applicable, then OK.
- For this specific example we
will be setting up a few other variables to trend. 8 can be set up total.
- Go back to the Chart
Properties and go to the Pens tab. Select Add/Configure Tags.
- From the popup,
click inside the Select Tag area and type LIFT41_InLow.SEQ.Sequence.7. Click Add then OK.
- This newly added
tag is a bool value as well, scroll over in the pen attributes and set
the Min and Max values to -0.1 and 1.1 respectively.
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