Speed-Position Switching Control (Inc Mode) - Mitsubishi Electric QD75P1N User Manual

9 MAJOR POSITIONING CONTROL

9.2.18 Speed-position switching control (INC mode)

In "speed-position switching control (INC mode)" (" Da.2 Control system" =
Forward run: speed/position, Reverse run: speed/position), the pulses of the speed set
in " Da.8 Command speed" are kept output on the axial direction set to the
positioning data. When the "speed-position switching signal" is input, position control of
the movement amount set in " Da.6
exercised.
"Speed-position switching control (INC mode)" is available in two different types:
"forward run: speed/position" which starts the axis in the forward run direction and
"reverse run: speed/position" which starts the axis in the reverse run direction.
Use the detailed parameter 1 " Pr.150 Speed-position function selection" with regard
to the choice for "speed-position switching control (INC mode)".
Setting item
Speed-
position
Pr.150
function
selection
If the set value is other than 0 and 2, it is regarded as 0 and operation is performed in the
INC mode.
For details of the setting, refer to Section 5.2 "List of parameters".
Switching over from speed control to position control
(1) The control is switched over from speed control to position control by
executing the external command signal set in "speed-position switching
signal".
(2) Besides setting the positioning data, the " Cd.24 Speed-position switching
enable flag" must also be turned ON to switch over from speed control to
position control. (If the " Cd.24 Speed-position switching enable flag" turns
ON after the speed-position switching signal turns ON, the control will continue
as speed control without switching over to position control. The control will be
switched over from speed control to position control when the speed-position
switching signal turns from OFF to ON again. Only position control will be
carried out when the " Cd.24 Speed-position switching enable flag" and
speed-position switching signal are ON at the operation start.)
Setting item
Speed-
position
Cd.24 switching
enable
flag
Positioning address/movement amount" is
Setting
Setting details
value
Speed-position switching control
0
(INC mode)
Setting
Setting details
value
Set "1: Switch from speed control
to position control when the
1
external command signal [CHG]
turns ON.".
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MELSEC-Q
Buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
34 184 334 484
Buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
1528 1628 1728 1828