Mitsubishi Electric QD77MS, User Manual

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9 - 103
Chapter 9 Major Positioning Control
9.2.17 Speed-position switching control (ABS mode)
In case of "speed-position switching control (ABS mode)" ("[Da.2] Control method" =
Forward run: speed/position, Reverse run: speed/position), the pulses of the speed set
in "[Da.8] Command speed" are kept output in the axial direction set to the positioning
data. When the "speed-position switching signal" is input, position control to the
address set in "[Da.6] Positioning address/movement amount" is exercised.
"Speed-position switching control (ABS 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.
"Speed-position switching control (ABS mode)" is valid only when "[Pr.1] Unit setting"
is "2: degree".
[Pr.1] Unit setting
Speed-position
function selection
mm inch degree PLS
INC mode
ABS mode
: Setting allowed,
: Setting disallowed (If setting is made, the error "Speed-position function selection error"
(error code: 935) will occur when the PLC READY signal [Y0] turns ON.)
Use the detailed parameter 1 "[Pr.81] Speed-position function selection" to choose
"speed-position switching control (ABS mode)".
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Pr.81]
Speed-
position
function
selection
2
Speed-position switching control
(ABS 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".