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Detailed explanation of command words
4MELFA-BASIC IV
Mv Tune (Move Tune)
[Function]
Select the robot operating characteristics from one of the following three modes. The robot operating
performance will improve by selecting the optimum operating characteristics based on the application.
Operating characteristics are optimized based on the hands and workpieces specified with the LoadSet command.
Set the correct weight, shape and barycentric position of hands and workpieces actually used.
[Format]
[Terminology]
<Operating Characteristics Mode >
The robot operating characteristics mode (1 to 3) is specified with either
a constant or numeric value variable.
1: Standard mode (default)
2: High-speed positioning mode
3: Trajectory priority mode
[Reference Program]
LoadSet 1,1
'Sets to hand 1/workpiece 1.
MvTune 2
'Changes the operating characteristics mode to high-speed positioning
Mvs P1
MvTune 3
' Changes the operating characteristics mode to trajectory priority mode
Mvs P2
[Explanation]
(1) This has been adjusted to ensure the optimum characteristics based on the hand and workpiece conditions
specified with the LoadSet command. If the hand and workpiece conditions have not been set correctly, there
is a possibility that sufficient performance will not be achieved. (Refer to
Page 377, "5.16 Hand and Work-
piece Conditions (optimum acceleration/deceleration settings)"
)
(2) Standard mode is specified as the default immediately after the power is turned ON.
(3) The operating characteristics mode returns to standard mode when a program is terminated (End command
execution, program reset following an interruption), however, the current operating characteristics mode is
retained with the sub-program End command executed with the CallP command.
(4) The current operating characteristics mode is retained when restarting after a program interruption (including
interruption, restart after program editing).
(5) The differences between the standard mode and the other operating characteristics modes are as follows.
Moving Characteristics
Mode
Features
1
Standard mode
(default)
This is the maker standard setting.
This mode has been tuned to standard
characteristics that can be used for all applications.
2
High-speed
positioning mode
This mode reduces the time taken to reach the target position.
This setting is effective
for reducing tact time, however, the load on the motor is greater when compared to
“Standard mode” . Set to standard mode when there is no load ratio leeway.
3
Trajectory
priority mode
This mode improves the trajectory accuracy.
This mode is used when route accuracy is
required midway through operation, however, the operating time is longer when
compared to “Standard mode” . Set to “Standard mode” or “High-speed
positioning mode” to prioritize tact time. This mode has the same effect as when high-
accuracy mode is enabled with the Prec command.
MvTune[]<Operating Characteristics Mode>
Operating
characteristics mode
Target position arrival time
Trajectory accuracy
Load ratio
High-speed positioning
Shorter
Improvement (small)
Increased
Trajectory priority
Longer
Improvement (large)
Decreased