If you get a DWG drawing which contains multiple frames (with individual drawings) composed as an array in the modelspace, you can use the following utility that "batch plots" these sub-drawings, or - better - splits them into individual layouts, that can be batch-plotted using the PUBLISH command.
The free LISP utility CADstudio PlotDWGarr can be downloaded from www.cadstudio.cz/download. After you load it with APPLOAD, you can use the PlotDWGarr command to start the batch plotting (to the curent print device, with the current parameters - see your last PLOT) of all frames in the array, or the LayDWGarr command to generate new layouts containing the individual "drawings" (frames).
In both cases, the application first prompts fo the shape of the rectangular array with the "drawings". You will sequentially enter the top left point (1), the size of a single frame (2), the distance between columns (3) and rows (4), the number of columns and rows (see the picture). Possible missing frames are ignored (not plotted).
As a result, either a respective number of plots is printed, or a series of numbered layouts is created. These generated layouts are created from the layout template "(PlotArrTemplate)". In this template you can predefine the viewport size, its scale, page setup, etc.). You can the plot this series in one go using the PUBLISH command.
Please avoid using AutoCAD drawings in this way - use rather Layouts, or specialized solutions like AutoCAD Electrical.