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Chapter 9 Major Positioning Control
9.2.16 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] Positioning address/movement amount" is 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.81] Speed-position function selection" with regard to
the choice for "speed-position switching control (INC mode)".
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Pr.81]
Speed-
position
function
selection
0
Speed-position switching control
(INC mode)
34+150n
(Note): 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 selected the switching method from speed control to position
control by the setting value of "[Cd.45] Speed-position switching device
selection".
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Cd.45]
Speed-
position
switching
device
selection
The device used for speed-
position switching is selected.
0: Use the external command
signal for switching from speed
control to position control
1: Use the near-point signal for
switching from speed control to
position control
2: Use the "[Cd.46] Speed-
position switching command"
for switching from speed
control to position control
1566+100n 4366+100n
The switching is performed by using the following device when "2" is set.
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Cd.46]
Speed-
position
switching
command
The speed-position control
switching is performed when "2"
is set in "[Cd.45] Speed-position
switching device selection".
1567+100n 4367+100n