5. SEQUENCE PROGRAMS AND SFC PROGRAMS
5 − 7
[Error Details]
(1) In the following cases an operation error occurs and the CHGA instruction is
not executed.
• When the setting for (D) is other than J1 to J32.
(2) In the following cases, a minor error (error on control change) occurs and the
current value change is not executed.
When this happens, the error detection flag (M2407+20n) is turned ON and the
error code is stored in the minor error code area for the relevant axis.
• When the axis designated in (D) for the current value change is in motion.
[Program Example]
The program shown below changes the current value for axis 2.
(1) Conditions
1) Current value change command ................... Leading edge (OFF→ON) of
X000
2) Current value change execution flag............. M0
3) Axis 2 start accept flag
(used to determine whether axis 2 is stopped
or in motion)................................................... M2002 (axis 2 start accept flag)
(2) Program example
CIRCUIT END
Axis 2 current value change execution
request.
M0 turned OFF.
0
2
X000
SET
RST
M0
M0
CHGA 50
K
J2
M0 M2002
Start accept flag
When X000 comes ON, M0 is turned ON.
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