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9 MAJOR POSITIONING CONTROL
V
In speed control
Current feed value during speed control start is maintained
(a) Current feed value not updated
Current feed value during 4-axis speed control
The following table shows the "
control corresponding to the "
settings. (Note that the reference axis setting values are used for parameters.)
Pr.21 Current feed value during speed
control" setting
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
V
t
Current feed value is updated
(b) Current feed value updated
Restrictions
(1) Set "Positioning complete" in "
"Continuous path control not possible (error code: 516)" will occur and the
operation cannot start if "continuous positioning control" or "continuous path
control" is set. ("Continuous positioning control" and "continuous path control"
cannot be set in speed control.)
(2) Set the WITH mode in "
an M code. The M code will not be output, and the M code ON signal will not
turn ON if the AFTER mode is set.
(3) Set the "reference axis speed" in "
method". An "Interpolation mode error (error code: 523)" will occur and the
operation cannot start if a composite speed is set.
Md.20
Current feed value" during 4-axis speed
Pr.21
Current feed value during speed control"
The current feed value at speed control start
is maintained.
The current feed value is updated.
The current feed value is fixed at 0.
In speed control
t
Da.1
Operation pattern". An axis error
Pr.18
M code ON signal output timing" when using
Pr.20
9 - 80
MELSEC-Q
Md.20 Current feed value
V
In speed control
0
(c) Current feed value zero cleared
Interpolation speed designation
t
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