Yaskawa MP920 Motion Module - Manual (Page 54)

2 Motion Control
2.3.1 Prerequisites for Position Control
2-28
„ Reference Unit
The reference units input to the Module are set with the following motion fixed parameter
settings.
Pulses, millimeters, degrees, or inches can be used as the reference unit. The reference unit
is specified in bits 0 to 3 of motion fixed parameter No. 17 (Motion Controller Function
Selection Flags).
The minimum reference unit that can be specified in the Module is determined by the above
unit settings and the setting of motion fixed parameter No. 18 (Number of Digits Below
Decimal Point).
When motion commands (OW††20) are not used, the unit will be the pulse.
Note: The number of digits below the decimal point is specified in motion
fixed parameter No. 18 (Number of Digits Below Decimal Point).
Table 2.10 Minimum Reference Unit (1 Reference Unit)
Number of Digits
Below Decimal
Point
Motion Fixed Parameter No. 17
Bits 0 to 3 of Motion Controller Function Selection Flags
Pulse (= 0) mm (= 1) deg (= 2) inch (= 3)
0 1 pulse 1 mm 1 deg 1 inch
1 1 pulse 0.1 mm 0.1 deg 0.1 inch
2 1 pulse 0.01 mm 0.01 deg 0.01 inch
3 1 pulse 0.001 mm 0.001 deg 0.001 inch
4 1 pulse 0.0001 mm 0.0001 deg 0.0001 inch
5 1 pulse 0.00001 mm 0.00001 deg 0.00001 inch