462
7 AUXILIARY AND APPLIED FUNCTIONS
7.8 Override Function
7.8
Override Function
The override function sets an override ratio of 0.0 to 300.0[%] in increments of 0.1[%] to be applied to the command speed
during positioning control. The speed command with the override ratio applied is the actual feed speed. For interpolation
operations or machine operations, the override ratio setting of the lowest axis is valid.
The types of controls where override function can be used are shown below.
: Usable,
: Unusable
*1 In high-speed oscillation, the override is applied to the frequency.
*2 The override of axes assigned as G-code control axes is ignored. The override for G-code control is used.
Setting the override
The change of speed by override function is set in the override ratio setting device. The override ratio setting device sets
override data, and each axis in the command generation axis parameter.
Refer to override data for details on override data. (
Refer to the following for details of the command generation axis parameter.
MELSEC iQ-R Motion Controller Programming Manual (Advanced Synchronous Control)
• Set the value of the override ratio to the device set as the override ratio setting device.
Control mode
Servo instruction
Usable/unusable
Servo axis
Command
generation axis
Linear control
Circular interpolation control
Helical interpolation control
Fixed-pitch feed control
Continuous trajectory control
Speed control (
)
Speed control (
)
Speed-position switching control
Position follow-up control
Speed control with fixed position
stop
Simultaneous start
JOG operation
Manual pulse generator operation
High-speed oscillation
Home position return
Speed-torque control
Pressure control
Machine control
Direct positioning control by Motion dedicated PLC instruction (M(P).SVSTD/D(P).SVSTD)
G-code control
Name
Setting range
Override ratio setting device
0 to 3000(
10
-1
[%])
ABS-1
ABS-2
ABS-3
ABS-4
INC-1
INC-2
INC-3
INC-4
ABS circular
INC circular
ABS helical
INC helical
FEED-1
FEED-2
FEED-3
CPSTART1
CPSTART2
CPSTART3
CPSTART4
VF
VR
VVF
VVR
VPF
VPR
VPSTART
PFSTART
PVF
PVR
START
OSC
ZERO
Summary of Contents for MELSEC iQ-R16MTCPU
Page 2: ......
Page 477: ...APPENDICES Appendix 1 Processing Times of the Motion CPU 475 A MEMO ...
Page 481: ......