The ornamental design for a floorbasemodule, as shown and described.
FIG. 1 is a front view of a floor base module showing our new design;
FIG. 2 is a bottom view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a back view thereof;
FIG. 7 is a perspective view thereof;
FIG. 8 is an enlarged perspective view of the left front corner of FIG. 7.
FIG. 9 is an enlarged perspective view of the right front corner of FIG. 7.
FIG. 10 is a perspective view showing one floor base module in use; and,
FIG. 11 is a right-back perspective view showing one floor base module in use.
The broken lines depict two additional pieces of the floor base module connected together to depict environmental use. The broken lines form no part of the claimed design.