Mitsubishi Electric MELSEC iQ-R Series User Manual page 52

[Pr.324] Synchronous encoder axis length per cycle
Set the length per cycle for the synchronous encoder axis position value per cycle.
The position value of synchronous encoder axis is stored in "[Md.321] Synchronous encoder axis position value per cycle" at
ring counter based on the setting value.
The unit settings are in synchronous encoder axis position units (Page 36 Synchronous encoder axis position units). Set
a value within the range from 1 to 2147483647.
Set a value within the range from 1 to 2147483647.
■Setting example of the unit conversion and the length per cycle.
The following shows an example a rotary encoder is connected which resolution is 4000 [pulse/rev] to the motor axis side on
the rotation table that drives by 1/5 pulley system, and the control unit is degree.
• Position unit: 0.1 [degree]
• Speed unit: 0.001 [degree/min]
• Length per cycle: 360.0 [degree] (1 cycle of the rotation table)
Setting item
[Pr.321]
Synchronous encoder axis unit
setting
[Pr.322] Synchronous encoder axis unit conversion: Numerator
[Pr.323] Synchronous encoder axis unit conversion: Denominator
[Pr.324] Synchronous encoder axis length per cycle
Synchronous encoder
input pulse
[Pr.322], [Pr.323]
Synchronous encoder
axis unit conversion
[Md.320] Synchronous
encoder axis
position value
[Md.321] Synchronous
encoder axis
position value
per cycle
[Md.322] Synchronous
encoder axis speed
(Speed after unit
conversion)
2 INPUT AXIS MODULE
50
2.2 Synchronous Encoder Axis
Control unit
Number of decimal places for position
Speed time unit
Number of decimal places for speed
[pulse]
40000
20000
[ × 0.1 degree]
7200
3600
[ × 0.1 degree]
[Pr.324] Synchronous encoder axis length per cycle
3600
[ × 0.001 degree/min]
Setting details
2: degree
1
1: minute [min]
3
360.0 [degree]  1
4000 [pulse]  5
360.0 [degree]
t
t
t
t
Setting value
3112H
3600 [  0.1 degree]
20000 [pulse]
3600 [  0.1 degree]