User`s manual

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5
About startup axis in program operation, and interpolation operation
Startup
This module can simultaneously start single-step operation of each of the four axes, and perform
linear interpolation of two axes. It can also perform start interpolation of two axes with single-step
operation of the other axes, and simultaneously start linear interpolation of two sets of two axes.
On the JW-14PS, the combination of the two axes to interpolate can be selected as desired.
However, a duplicate instruction error occurs when 2-axis linear interpolation is instructed while
the axes programmed for 2-axis linear interpolation are already in operation.
Interpolation data
When performing linear interpolation on two axes, linear interpolation is possible using the step
data of any the axes (X, Y, Z, or A). The data used for linear interpolation follows the axis data of all
step data with the exception of coordinate data. The data of the axis to be interpolated is used as
the coordinate data.
For example, when performing linear interpolation on the X- and Y-axes using the step data of the
Z-axis, all of the data of the Z-axis is used as the acceleration/deceleration time, startup speed,
target speed, and dwell timer data. The data of the X- and Y-axes is used only for the coordinate
data, and the target speed (speed data) becomes the interpolation speed.
[Example] Step data when performing linear interpolation on the X- and Y-axes in program operation
of Z-axis
Z-axis step data
Step No.1
4(BCD)
15(BCD)
11(BCD)
00(BCD)
02(BCD)
01(BCD)
09(BCD)
15(BCD)
0(BCD)
8(BCD)
X/Y-axis designation ("3" in Hex) - Operation pattern 0 (single step)
Acceleration time No.4 (Z-axis data) - Deceleration time No.8 (Z-axis data)
Startup speed No.15 (Z-axis data)
Target speed No.11 (Z-axis data)
Dwell timer disabled (Z-axis data)
Position data No.02 (X/Y-axis data)
Output code 01 (indicated in Z-axis relay area)
Output code 9
Jump destination 15
indicates ON.
The following shows the relationship between speed and coordinates during operation using the
above data.
Y-axis
X-axis
Final coordinate (X-axis No.2, Y-axis No.2)
Interpolation at speed
of Z-axis No.11