YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 225 / 373

14.1 Fundamental settings
14-15
• MD30260 ABS_INC_RATIO [0] (For each axis)
Meaning: Ratio of motor encoder absolute position data, from drive to CNC, to
Motor encoder position data.
Standard setting value: 1
• MD30300 IS_ROT_AX (For each axis) ##
Meaning: Linear/Rotary axis setting
Setting value: 0 --- Linear axis
1 --- Rotary axis
• MD31020 ENC_RESOL [0] (For each axis) ##
Meaning: The number of motor encoder pulses
The setting value is compared with a value read from a drive. If the val-
ues are different each other, an alarm is issued.
Setting value: The number of encoder pulses (4-multiplication value) /MD31025. Refer
to Table 14.2.
• MD31025 ENC_PULCE_MULT [0] (For each axis) ##
Meaning: Motor encoder pulse scaling factor
Setting value: See the following table.
• MD31030 LEADSCREW_PITCH (For each axis)
Meaning: Ball screw pitch
Setting value: [mm/rev]
• MD31050 DRIVE_AX_RATIO_DENOM [0] (For each axis)
Meaning: Load gear denominator (Amount of rotation at machine (The number of
gear teeth at motor))
Table 14.2
Motor encoder list
The number of pulses
(4-multiplication value)
Serial/
pulse
Servo axis/
Spindle
MD31020
[0]
MD31025
[0]
Remark
2048 Pulses Spindle 1 2048
3600 Pulses Spindle 900 4 This has been
used with J300L.
4096 Pulses Spindle 2 2048
8192 Pulses Spindle 4 2048
8192 (13bit) Serial Servo 4 2048
65536 (16 bit)
Serial Servo 32 2048
131072 (17 bit) Serial Servo/Spindle 64 2048
524288 (19 bit) Serial Spindle (C axis) 256 2048
1048576 (20 bit) Serial Servo 512 2048