Delta D25886 User Manual Page 241

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4. Motion Control Instructions
4-200 DVP-MC operating manual
4.8.5.2 Absolute/ Relative Mode Switching Instruction
API
Controller
DNC_AbsoluteG90
In absolute mode
262
DNC_RelativeG91
In relative mode
10MC11T
Instruction explanation:
The two instructions are used to specify the mode for dealing with the terminal position of each axis such as
absolute mode or relative mode. After the instruction DNC_Group with same GroupID is executed, the
two instructions just can be executed.
After DNC_Absolute (G90) is executed, the terminal position of each axis in the coordinate motion instruction
which is executed later is based on 0 unit and DNC_Relative (G91) can be used to switch to the relative
mode. It is absolute mode for the program by default.
After DNC_ Relative (G91) is executed, the terminal position of each axis in the coordinate motion instruction
which is executed later is calculated with the incremental value beginning from current position and
DNC_Absolute (G90) is used to switch to the absolute mode.
Explanation of input and output parameter of the instruction:
Parameter
name
Explanation
Data
type
Available
device
Execute
This instruction is executed when
“Execute” turns Off ->On.
BOOL M, I, Q, constant
GroupID
The number of the coordinate motion
instruction group, range: 0~7.
When the instruction is executed, the
group ID should be consistent with that
of DNC_Group.
UINT Constant, D
Done
When execution of the instruction is
finished, “Done” is on; when “Execute”
is off, “Done” is reset.
BOOL M,Q
Error
If any error is detected, "Error" turns on;
when "Execute" turns off, "Error" is
reset.
BOOL M,Q
ErrorID Error code. Please refer to section 5.3. UINT D
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