3 PARAMETERS FOR POSITIONING CONTROL
3.7 Expansion Parameters
199
3
• When the setting of ABS direction in degrees device is omitted, a shortcut operation occurs.
• If one of the following conditions is not satisfied, the setting of ABS direction in degrees device is disabled.
(1) Control unit is set to a degrees axis.
(2) Stroke limit is set to invalid.
(3) A servo instruction with ABS direction in degrees enabled is used.
• Positioning address is within the range of "0
to 359.99999
". If performing positioning for one revolution or
more, use the incremental system.
Operation 2
Operation 2 for when ABS direction in degrees device is set is shown below.
■
Positioning conditions
■
Servo program
■
When "Movement amount from current value < deceleration stop distance" at positioning
address change
Item
Setting
Servo program No.
11
Control axis
1
Positioning address
D6000 [degree]
Positioning speed
18.000 [degree/min]
ABS direction in degrees device
1 (forward direction)
PFSTART
Axis 1,
Speed
<K 11>
18.000degree/min
D6000degree
Speed
Because a deceleration stop cannot be made
at the position, after making a deceleration
stop, positioning continues to the
positioning address one revolution ahead.
Positioning
address
Positioning address
change
t
Feed current
value
Positioning
address
360
0
t
350
°
270
°
Summary of Contents for MELSEC iQ-R16MTCPU
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