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11 SUB FUNCTIONS
11.5 Target position change function
11 - 9
The "target position change function" allows the target position to be changed at any
given timing during execution of position control (Operation pattern: Positioning
termination).
To use this function, set a new target position* in " Cd. 11 Target position change
value" and turn ON " Cd. 10 Target position change request".
* The setting for a new target position differs depending on whether to select "1: 1-
axis linear control (ABS)" or "1-axis linear control (INC)" for "Da.2 Control method".
• For the 1-axis linear control (ABS), set the movement amount from the OP address.
• For the 1-axis linear control (INC), set the movement amount from the start address.
The following explains the "target position change function".
[1] Control details
[2] Precautions during control
[1] Control details
The control cases using the target position change function are shown below.
(1) When the target position change request is input, the work is located before
the deceleration start position for the newly specified target.
V
Target position change request ON
New target position
(Decremented)
(2) When the target position change request is input, the work is located beyond
the deceleration start position for the newly specified target.
V
Deceleration start position
for new target
New target
position
(Decremented)
(3) When the target position change request is input, the work has started
decelerating to stop.
V
New target position
(Decremented)
Previous target position New target position
Target position change request ON
Previous target position
Target position change request ON
Previous target
position
L
(Incremented)
L
L
New target position
(Incremented)
MELSEC-Q
11 - 9
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