9 - 47
MELSEC-Q
9 MAJOR POSITIONING CONTROL
9.2.8 3-axis fixed-feed control (interpolation)
In "3-axis fixed-feed control" ("Da.2 Control s ystem" = fixed-feed 3), three motors are
used to carry out fixed-feed control in a linear path while carrying ou t interpolation for
the axis directions set in each axis.
In fixed-feed control, any remainder of the m ovement amount designated in the
positioning data is rounded down if less t han that required for control accuracy to
output the same amount of pulses. (The remaind er of the movement amount with an
accuracy below the control accuracy does no t affect the regular controls.)
(Refer to Section 9.1.6 "Interpolation control" for details on in terpolation control.)