The force platform outputs FX, FY, and FX, are recorded in the first three channels, PX, PY (the locations of the center of pressure) in the next two channels and the free moment about the Z-axis (MZ) to the sixth channel.  The recommended parameter ANALOG:LABEL and ANALOG:DESCRIPTIONS are shown below:

Figure 35 - TYPE-1 channel labels and descriptions

If multiple force plates are used, it is important to identify the channels for each plate with the force plate number shown as n in the parameters documented here.