Applies To:
  • CitectSCADA 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0
  • CitectHMI 5.31, 5.40, 5.41, 5.42, 5.50, 6.0, 6.1, 7.0

The example for the TrnPlot() function given in the help file does not work? 



TrnPlot(sPort, nSamples, iTime, rPeriod, sTitle, AN, Tag1......Tag8, iMode, sComment, rLoScale1, rHiScale1, ......rLoScale8, rHiScale8)

Use the example below:

/* Prints a black and white plot to LPT1, containing the trend
lines of two variable tags (PV1 & PV2). The trend lines have a
starting time of 9am, on 11/10/96, 200 sample points, and a period
of 2 seconds. The trend line of PV1 will be on a vertical scale of
0-200, and PV2 will be on a vertical scale of 0-400. */

INT time;

Time = StrToDate("11/10/96") + StrToTime("09:00:00");
TrnPlot("LPT1:",200,Time,2,"Citect Trend Plot",0,"PV1","PV2","","","","","","",0,"Process variable operation
at shutdown",0,200,0,400);

-0 (AN value) is added to the TrnPlot function above which was missing in the example of the help file.