330
Linear Interpolation
Section 6-3
PTP control, the acceleration or deceleration time is not shortened according
to the speed (except for triangular control).
The Constant Acceleration Mode is provided to shorten the positioning time
when only one axis is used for linear interpolation. This mode is normally set
to OFF (i.e., it is turned OFF in the CX-Motion default settings). When it is
turned ON (enabled), positioning will be executed at acceleration and deceler-
ation times according to the interpolation feed rate, as shown in the following
diagram. When linear interpolation is executed for two or more axes, position-
ing will accelerate and decelerate at the interpolation acceleration and decel-
eration times (as shown in the above diagram) regardless of the interpolation
feed rate and even if the Constant Acceleration Mode is turned ON (enabled).
In the following diagram, linear interpolation is executed for one axis only with
the Constant Acceleration Mode turned ON.
Acceleration time Ta = Specified interpolation feed rate x interpolation accel-
eration time / maximum interpolation feed rate
Deceleration time Td = Specified interpolation feed rate x interpolation decel-
eration time / maximum interpolation feed rate
Time
Interpolation
deceleration
time
Interpolation
acceleration
time
Speed reference
Even if the feed rate during linear interpolation
(the interpolation feed rate) is changed, the time
required to reach the changed feed rate or the
time required to reach speed 0 from the feed rate
will be only the interpolation acceleration time or
interpolation deceleration time.
0
Time
Interpolation
deceleration
time
Interpolation
acceleration
time
Speed reference
Interpolation
feed rate
Positioning is executed with an acceleration time (Ta)
and deceleration time (Td) that maintain constant
acceleration and deceleration to and from the maximum
interpolation feed rate.
0
Maximum
interpolation
feed rate
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...