Change plot style table from none to monochrome in one hit

As per header. Is there anything (command, variable) I can change it without opening dialog box.

Need to revise and print new set of dwgs and all of them are setup to none.

Please and thank you.

Try a page setup

I did it( see picture) but I need something faster in command line or macro...

-plot gives you the command line version.

You're interested in the StyleSheet property of each PlotConfiguration Object in your drawing:

(defun c:GETPLOTSTYLES (/ plotConfigs)
 ;; © RenderMan 2011
 (princ "GET PLOT STYLES")
 (vl-load-com)
 (if (setq plotConfigs (vla-get-plotconfigurations
                (vla-get-activedocument (vlax-get-acad-object))))
   (progn
     (textpage)
     (vlax-for pc plotConfigs
       (terpri)
       (prompt (strcat "\nPlot Configuration: \t" (vla-get-name pc)))
       (prompt
         (strcat "\nAssigned Style: \t\t  " (vla-get-stylesheet pc))))))
 (terpri)
 (princ))

Hope this helps!

Set up your first plot, then use previous for the rest, if all drawings are being plotted to same plotter with same settings.

Need to revise and print new set of dwgs and all of them are setup to none.

Doh!

Have you considered simply setting up one plot configuration the way you want, save it to a DWG, and use the Publish command to import it to the set of DWG's needed?