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5 Operation
67 SD780 Series Servo Technical Manual
Function
code
Setting
value
Order form
Forward instruction
Reverse instruction
Pn201
0
Pulse +
direction
positive
logic
1
CW+CCW
positive
logic
4
Quadrature
encoding 4
times
5
Pulse +
direction
negative
logic
6
CW+CCW
negative
logic
3.
Electronic gear ratio
When the reduction ratio of the motor shaft and the load side is n/m (when the load shaft rotates by
n revolutions when the motor rotates by m revolutions), the set value of the electronic gear ratio
can be obtained by the following formula:
Electronic gear ratio
𝐵
𝐴
=
𝑃𝑛204
𝑃𝑛206
=
Encoder resolution
Load shaft movement amount in 1 rotation (command unit)
×
𝑚
𝑛