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6 MOTION PROGRAMS FOR POSITIONING CONTROL
6.16.17 Speed change (CHGV)
Code CHGV
Function Speed change
A speed change of the specified axis is executed.
Format
Speed change value (Indirect setting is possible)
n;HV
C
GJX
The "J + Axis name" to change the speed value
is set.
It is possible to specify it only by an axis.
[Explanation]
(1) The speed changing flag (M2061 to M2092) of the specified axis is turned ON.
(2) The speed changing flag is turned OFF after changing speed to "n".
(3) CHGV can be changed in the range of the speed limit value though override is a
speed change which specifies the ratio from 0 to 100[%].
CHGV instruction is executed an equal to S(P).CHGV instruction of "3 MOTION
DEDICATED PLC INSTRUCTION" in the Motion program.
REMARK
G90 ;
G00 X0. ;
G00 X1000. ;
CHGV JX 100. ;
G90 ;
G00 X0. ;
G00 X1000. ;
N1 ;
IF [ON #M2402] GOTO1 ;
CHGV JX 100. ;
(1) When the block of CHGV is preread by programming the above left program,
CHGV is executed while executing the block (example : G00 block) before CHGV.
Make the program like a above right program to execute CHGV after the block of
"G00 X1000. ; " ends.
(2) Set the speed change value specified with the CHGV instruction without the
decimal point.
If the speed change value with decimal point is set, an effective digit below the
decimal point is distinguished as follows, and it converts it into the value without
the decimal point .
Fixed parameter of specified axis
Units
Speed control 10
multiplier
setting for degree axis
Number of effective digits
below the decimal point
Ex.)
"CHGV JX 12345.6789;" is set.
mm
2 digits CHGV JX 1234567
inch
3 digits CHGV JX 12345678
Valid 2 digits CHGV JX 1234567
degree
Invalid 3 digits CHGV JX 12345678