There may be more than one data-acquisition object in a script, but only one may be running (i.e., acquiring values) at any time. The typical life-cycle of a Cpiv object is:
Cpiv = CPIV.New(Tag, Pstat) ; Create the Cpiv
Cpiv.SetPlot(Plottype) ; Determine the plot type
Cpiv.Run() ; Run the curve
Cpiv.Printl() ; Print the curve out to Output
NOTE: When a Cpiv object is run, the potentiostat must be in Potentiostat mode.