Parameter: /trend or /trends
There can be up to eight parameter reference names specified per Chart or E+Chart. Enclose the parameter name list in parentheses or double quotes. If specifying more than one parameter reference, separate the individual elements of the list with commas.
Type: Parameter Reference Names
Applies to: Chart and E+Chart
Value: Any valid parameter reference in the system. For any values collected historically, the full pathname is required (include the .CV, .ST, and so on). For points not available historically, but available in OPC, enter the parameter reference with or without the extension.
Example:
CHS /span 1:00 /trend (MTR101/PID1/PV.CV, MTR201/PID1/PV.CV)
In this example, Process History View shows data for the last hour for the two trends, MTR101/PID1/PV.CV and MTR201/PID1/PV.CV: