Mitsubishi Electric Q173DSCPU Programming Manual page 115

5 INPUT AXIS MODULE
(4) [Pr.324] Synchronous encoder axis length per cycle
Set the length per cycle for the synchronous encoder axis current value per
cycle. The current value of synchronous encoder axis is stored in [Md.321]
Synchronous encoder axis current value per cycle (D13242+20n, D13243+20n)
at ring counter based on the setting value.
The unit settings are in synchronous encoder axis position units (Refer to Section
5.3.1).
Set a value within the range from 1 to 2147483647.
(Example) 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[PLS/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
• Speed unit
• Length per cycle : 360.0 [degree] (1 cycle of the rotation table)
Setting item
[Pr.321] Control unit
Synchronous Number of decimal places for position
encoder axis unit
Speed time unit
setting
Number of decimal places for speed
[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
current value
(D13240+20n, D13241+20n)
[Md.321] Synchronous encoder axis
current value per cycle
(D13242+20n, D13243+20n)
[Md.322] Synchronous encoder axis
speed
(D13244+20n, D13245+20n)
(Speed after unit conversion)
: 0.1 [degree]
: 0.001 [degree/min]
360.0 [degree]
[PLS]
40000
20000
[ 0.1degree]
7200
3600
[ 0.1degree]
[Pr.324] Synchronous encoder axis
length per cycle
3600
[ 0.001degree/min]
5 - 36
Setting details Setting value
2: degree
1
1: min
3
1 3600 [ 0.1degree]
4000 [PLS] 5 20000 [PLS]
360.0 [degree] 3600 [ 0.1degree]
3112h
t
t
t
t