
337
Part 4 Commands
3.2 Load Coordinate System (Dedicated SCARA Function)
This coordinate system provides 32 sets of three-dimensional cartesian coordinates and rotating-
axis coordinates as defined by the offset of each axis with respect to the base coordinate system.
Note that load coordinate system No. 0 is reserved by the system as the base coordinate system (=
load coordinate system offsets are 0).
Xofwn: X load coordinate offset
Yofwn: Y load coordinate offset
Zofwn: Z load coordinate offset
Rofwn: R load coordinate offset
Xwn: Load coordinate system, X-axis
Ywn: Load coordinate system, Y-axis
Zwn: Load coordinate system, Z-axis
Rwn: Load coordinate system, R-axis
(“n” indicates load coordinate system
number.)
Xb
Yb
Zofwn
Xofwn
Yofwn
Zb
Rofwn
Xwn
Zwn
Rwn Ywn
338
Part 4 Commands
(1) Setting the load coordinate system
Set the offsets with respect to the base coordinate system.
Setting example of load coordinate system
When defining load coordinate system Nos. 1 and 2 as shown below:
The offsets of load coordinate system No. 1 are set as Xofw1 = 150, Yofw1 = 200, Zofw1 = 0 and
Rofw1 = 30.
The offsets of load coordinate system No. 2 are set as Xofw2 = -400, Yofw2 = 100, Zofw2 = 25 and
Rofw2 = -20.
The figure below shows the edit screen for load coordinate system definition data on the PC
software for horizontal articulated robot, where load coordinate system Nos. 1 and 2 are set:
* Use a DFWK command to set load coordinate system offsets in a SEL program.
Home of load
coordinate system
No. 1
Home of load
coordinate
system No. 2
–Yb
30
+Yb
200
100
Yw2
–Xb
–400
–20
Xw2
+Yw1
+Xw1
+Xb
150
340
Содержание X-SEL PX
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