# Mitsubishi Electric RD77MS2 User Manual Page 188

Melsec iq-r simple motion module.

Position control by manual pulse generator operation
In manual pulse generator operation, the position is moved by a "manual pulse generator 1 pulse movement amount" per
pulse. The current feed value in the positioning control by manual pulse generator operation can be calculated using the
expression shown below.
Current feed value = Number of input pulses  [Cd.20] Manual pulse generator 1 pulse input magnification  Manual pulse
generator 1 pulse movement amount
[Pr.1] Unit setting
Manual pulse generator 1
pulse movement amount
For example, when "[Pr.1] Unit setting" is mm and "[Cd.20] Manual pulse generator 1 pulse input magnification" is 2, and 100
pulses are input from the manual pulse generator, the current feed value is as follows.
100  2  0.1 = 20 [m] ("[Md.20] Current feed value" = 200)
The number of pulses output actually to the servo amplifier is "Manual pulse generator 1pulse movement amount/movement
amount per pulse".
The movement amount per pulse can be calculated using the expression shown below.
Movement amount per pulse =
For example, when "[Pr.1] Unit setting" is mm and the movement amount per pulse is 1 m, 0.1/1 = 1/10, i.e., the output to the
servo amplifier per pulse from the manual pulse generator is 1/10 pulse. Thus, the Simple Motion module outputs 1 pulse to
the servo amplifier after receiving 10 pulses from the manual pulse generator.
Speed control by manual pulse generation operation
The speed during positioning control by manual pulse generator operation is a speed corresponding to the number of input
pulses per unit time, and can be obtained using the following equation.
Output command frequency = Input frequency  [Cd.20] Manual pulse generator 1 pulse input magnification
5 MANUAL CONTROL
5.4 Manual Pulse Generator Operation
mm
inch
0.1 m
0.00001 inch
[Pr.3] Movement amount per rotation(AL)
[Pr.2] Number of pulses per rotation(AP)
degree
0.00001 degree
× [Pr.4] Unit magnification(AM)
pulse
1 pulse

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