Omron OMNUC G5 R88M-K series User Manual page 304

8-4 Analog Control Parameters
Pn324
External Feedback Pulse Dividing Numerator
Setting
range
Pn325
External Feedback Pulse Dividing Denominator
Setting
range
 Check the number of encoder pulses per motor rotation and number of external encoder pulses
per motor rotation, and set External Feedback Pulse Dividing Numerator (Pn324) and External
Feedback Pulse Dividing Denominator (Pn325).
 Set Pn324 to 0 to have encoder resolution automatically set as numerator.
 Refer to "5-4 Full Closing Control (P.5-9)".
 If this ratio is incorrect, the deviation between the position calculated from encoder pulses and
position calculated from external encoder pulses increases. Particularly when the moving distance
is long, an excessive deviation error occurs.
8
In the example below: ball screw pitch in 10 mm, encoder in 0.1 m/pulse, and encoder
resolution in 20 bits (or 1048576 pulses)
Pn326
External Feedback Pulse Direction Switching
Setting
range
 The direction of external encoder feed back count can be reversed.
 Refer to "5-4 Full Closing Control (P.5-9)".
Explanation of Set Values
value
8-29
0 to 1048576 Unit
1 to 1048576 Unit
Pn324 Encoder resolution per motor rotation [pulse]
=
Pn325 External encoder resolution per motor rotation [pulse]
Precautions for Correct Use
Reference
Pn324 Encoder resolution per motor rotation [pulse]
=
Pn325 External encoder resolution per motor rotation [pulse]
0 to 1 Unit
Set
0 External encoder feedback pulse count direction non-reverse
1 External encoder feedback pulse count direction reverse
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
Default

setting
Default

10000
setting
Default

setting
Description
Full closing
Data
0 R
attribute
Full closing
Data
R
attribute
1048576
=
100000
Full closing
Data
0 R
attribute