5. SEQUENCE PROGRAMS AND SFC PROGRAMS
5 − 8
5.4 Speed Change Instructions (CHGV)
This instruction is used to change the speed of an axis during positioning or JOG
operation.
5.4.1 CHGV instructions
Usable Devices
Bit Devices Word (16 Bit) Devices Constants Pointers Level
Carry
Flag
Flag Error
X Y M L S B F T C D W R A0 A1 Z V K H P I N
Digit Designation
Number of Steps
Subset
Index
M901
2
M
9010
M
9011
(D)
n !!! ! !
7
(Note)
!
!!
(Note) : Possible with indirect setting only
Setting data Setting range
(D)
J + No. of current
value change axis
J1 to 32
Direct
designation
mm : −600000000 to
600000000
×10
−2
mm/min
inch : −600000000 to
600000000
×10
−3
inch/min
deg : −2147483648 to
2147483647
×10
−3
deg/min
PLS : −10000000 to
10000000
PLS/min
SEQUENCE PROGRAM
CHGV
Execution command
(D)
n
[Execution
condition]
n
Setting of current
value to be changed
Indirect
designation
D800 to D8191
W0 to W1FFF
R0 to R8191
(1) The following processing is executed at the leading edge (OFF→ON) of the
CHGV instruction:
1) The speed change flag (M2061 to M2092) corresponding to the axis
designated in (D) is turned ON.
2) The speed of the axis designated in (D) is changed to the current value
designated in n.
3) The speed change in progress flag is turned OFF.
[Operation Timing]
OFF
ON
Execution command
CHGV instruction
Speed change flag
Speed chage completion
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