Yaskawa MP940 Reference Manual - Manual (Page 433)

Position Control MotionSuite™ MP940 Machine Controller Reference Manual
11-36
The parameters related to the position reference are shown in the table
below.
*1 Disabled when the position reference selection is “position buffer” (indirect designation).
*2 The setting data differs according to the position reference selection (bit 12 of OBC001)
and the position reference type (bit 14 of OBC001).
1. In indirect designation, in which the number of the position buffer is
designated, the position stored in the position buffer is handled as an
absolute position.
The position reference set in OLC012 is handled as an absolute posi-
tion when no motion command (OWC020) is used.
2. Set bit 14 of OWC001 “Position Reference Type” to the incremental
addition format when a motion program is used.
The system does not operate normally if a motion program is executed
in the absolute position format.
Parameter Type
Parameter Number
(Register Number)
Name Content
Initial
Value
Motion Setting
Parameters Bit 12 of OWC001 Position
Reference
Selection Sets the position reference designation
method.
0: Direct Designation
Direct setting of position data into
OLC012. Designate whether the
position data is in absolute position
format or incremental addition for-
mat in bit 14 of OWC001.
1: Indirect Designation
Set the position buffer number into
OLC012. The absolute position
must be stored beforehand into the
designated position buffer.
0
Bit 14 of OWC001 Position
Reference Type Designates position data type.
0: Absolute Position Format
Sets the absolute position in
OLC012.
1: Integral Addition Format
Sets the previous value of OLC012
to which the current motion amount
has been added into OLC012.*1
1
OLC012 Position
Reference
Setting Sets position data.*2 0