CNC Setup Utility Manual
P/N 70000490C - Machine Constants
All rights reserved. Subject to change without notice.
10-December-04
2-33
Table 2-2, Machine Constants Setup
(Continued)
Machine Constant
Parameter
Function Settings
MC_2305:
U Linear Encoder
Sinewave Period
Provides the number of encoder periods
corresponding to the U-axis
displacement as entered in MC_2306.
The sine signal of the encoder is
interpolated to obtain 1024* the nominal
resolution.
The input frequency of the encoder to
the CNC may not exceed:
350 kHz for an encoder with 1Vpp
signal
NOTE:
Both MC_2305 and MC_2306
may be multiplied by the same factor to
obtain integer values. Also, division by
the same factor is possible as long as
the result is an integer.
See “
sample calculations.
Range (0–20160)
1 [Default]
MC_2306:
U Linear Encoder µm
per Sinewave
U-axis grating pitch.
Range (1–100)
20 [Default]
MC_2307:
U Linear Encoder
Type
Defines the U-axis encoder type.
Lin Enc
[Default]
EverTrack
MC_2308:
U Linear Encoder
Signal Type
Defines the signal type for the U-axis
encoder.
1Vpp
[Default]
MC_2309:
U Linear Encoder
Phase
Moving the U-axis in a positive direction
should result in a positive count on the
axis display. Likewise, moving an axis
in a negative direction should result in a
negative count on the axis display. If an
axis display does not count in the
appropriate direction, adjust the
Encoder Phase settings to correct the
problem.
NOTE:
This is the only way to change
the direction of the count without
making hardware changes.
Not invert
[Default]
Invert
MC_2310:
U Ballscrew Pitch
Pitch is the linear distance traveled per
revolution of the U-axis ballscrew.
NOTE:
This parameter applies only to
rotary encoders. Do not use if the axis
is using a linear encoder for feedback.
Range (0.00000–30.00000)
0.47244 (inch) [Default]
