Question/Problem

Environment

1. Go online with the PLC. In this case we are going online with CP45 at Starbucks in York, PA.
2. 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.

3. Right click the tag and select Trend "LIFT_InLow_SOFT_RESET

4. The Trend window will display. Right click on the graph and select Chart Properties.

5. From the properties, navigate to the Display tab and select Display milliseconds.

6. Move over to the X-Axis tab and change the Time span to 2 minutes then select OK.

7. After the properties window closes select STOP in the top left hand corner.

8. Right click the graph again and select chary properties. Go over to the sampling tab and set the Sample Period to 2 milliseconds.

9. 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.

10. Go to the Y-Axis tab and select Preset then from the display options check Isolated graphing.

11. Select Apply if applicable, then OK.
12. For this specific example we will be setting up a few other variables to trend. 8 can be set up total.
13. Go back to the Chart Properties and go to the Pens tab. Select Add/Configure Tags.

14. From the popup, click inside the Select Tag area and type LIFT41_InLow.SEQ.Sequence.7. Click Add then OK.

15. 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.

16. Repeat step 14 for the following tags in this order:
1. LIFT_InLow_Status.LoadReady
2. LIFT41_InLow.Lift.Level_Request
3. LIFT41_InLow.Lift.At_Level_Number
4. LIFT41_InLow.MSG.LiftStatus.STATUS
17. Set the min and max values in the Pen Attributes to the following for each of the newly added tags.

18. When finished select Apply and OK.
19. You now should be trending all 6 tags. The values appear in the top right corner and you can click where on the X-Axis of the graph you'd like to see the values for and they will display.

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