Parasolid geometric modeling kernel most likely supports export to industry standards, such as DWG or DXF, so it is the likely choice for x_t to dwg conversion, i.e. export of the native text based Parasolid model (.x_t) as .dwg file.
If you do not have access to Parasolid, the only viable alternative is to use some 3rd party software, either another 3D modeling tool or perhaps dedicated x_t to dwg converter. Parasolid formats are well-supported in many 3D modeling / CAD programs and so many of them should have the proper tools to successfully convert x_t to dwg, or at least offer some other form of x_t to dwg export.
Updated: March 22, 2017