YASKAWA SIEMENS CNC Series, Maintenance Manual, Serviceman Handbook

Page: 231 / 373

14.1 Fundamental settings
14-21
• MD30260 ABS_INC_RATIO [1] (For each axis)
Meaning: Ratio to External encoder absolute position data from drive to CNC
Standard setting value: 1
• MD31000 ENC_LINEAR [1] (For each axis)
Meaning: External encoder type (rotary encoder/linear scale) setting
Setting value: 0 --- Rotary encoder
1 --- Linear scale
• MD31010 ENC_GRID_POINT_DIST [1] (For each axis)
Meaning: Linear scale resolution
Setting value: [mm]
• MD31020 ENC_RESOL [1] (For each axis)
Meaning: The number of separate rotary 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 separate rotary encoder pulses (4-multiplication values)/
MD31025 [1]
Refer to Table 14.3.
• MD31025 ENC_PULSE_MULT [1] (For each axis)
Meaning: External encoder pulse magnification
Setting value: Linear scale --- 1
Rotary encoder --- 4 (Refer to the table below)
• MD31040 ENC_IS_DIRECT [1] (For each axis)
Meaning: External encoder active/inactive
Setting value: 0 --- Inactive
1 --- Active
• MD32110 ENC_FEEDBACK_POL [1] (For each axis)
Meaning: Separate rotary encoder rotation direction
Setting value: 0 or 1 --- forward rotation
(-1 --- Reverse rotation)
Note: (Note) Set up External encoder reverse rotation connection at the
drive side. Be sure to set this parameter to "0" or "1".
Table 14.3
List of separate rotary encoders
Number of pulses
(4-multiplication value)
Serial/
Pulse
Servo axis/
Spindle
MD31020
[1]
MD31025
[1]
Remarks
4096 Pulses Spindle 1024 4
32768
Pulses Servo 8192 4
360000 Pulses Servo 90000 4 Spindle-embedded C
axis is excluded from
targets because 19-bit
encoders are used for
the time being.