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Free plane limit
5-481
5.9.2 Selection of a coordinates system for a free plane limit
This function, when the user proceeds with operation after changing the base coordinates system by a Base
command or the like, permits the user to choose between the option to move a free plane limit concurrently
or the option to keep it fixed. This choice is accomplished by specifying by the parameter SFCnCS that the
reference coordinate system is "world coordinate system" (for moving a free plane limit concurrently) or that
the same is "base coordinate system" (keeping a free plane limit fixed).
If the user does not make any change to the base coordinate system, the free plane limit remains
unchanged regardless of the choice he makes.
Refer to
Page 147, "4.5 Coordinate system description of the robot"
for details of the coordinate system.
Coordinate system
Explanation
World coordinate system
(SFCnCS=0)
When the base coordinate system is changed, the free plane limit moves concurrently. A change
occurs in the relative positional relation between the robot arm and the free plane limit.
Base coordinate system
(SFCnCS=1)
Change of base coordinate system does not cause the free plane limit to move. Relative positional
relation between the robot arm and the free plane limit is stationary. This provision helps when the
user proceeds with operation after making a change to the base coordinate system but wants to
keep stationary relative positional relation between the robot arm and the free plane limit.
<Select the World coordinate system (SFCnCS=0)>
Robot
Change of base coordinates
Base coordinate system
Free plane limit
World coordinate system
The relation between a free
plane limit and the robot
changes.
Robot
Change of base coordinates
Base coordinate system
Free plane limit
World coordinate system
The relation between a free
plane limit and the robot
dose not change.
The relation between the
world coordinate and base
coordinate changes.
<Select the Base coordinate system (SFCnCS=1)>