step1: Set P0-16 = 0
step2: Calculate the number of pulses required for one revolution of the load （A）
for example
PLC high-speed output frequency: 10000 hz
Servo motor speed requirement: 600 r/min
Then we get 10000/(60/10) = 1000 pulse/r
step3: Determine the encoder resolution （B）
for 2500-line encoder B is 2500
for 17-bit encoder B is 131072
for 23-bit encoder B is 8388608
step4: Determine the reduction ratio （C）
step5: Electronic gear ratio = (A/B)*C
set P0-17(electronic gear molecule) = A*C
set P0-18(electronic gear denominator) = B
Note:
Electronic gear ratio range limit:
2500-line incremental encoder: 0.01~100
17-bit encoder: 0.001~500
23-bit encoder: 0.001~3200