Mitsubishi Electric FR-A7AX Instruction Manual page 28

PARAMETERS
The input signal uses the last 15 (11) bits as torque command and the most significant bit as sign.
When 16 bit is selected
Bit15
sign bit
0: positive, 1: negative
REMARKS
The digital torque command is input only by binary input.
24
0 to 7FFF or 0 to 190 (400)
H H
Bit0