Mitsubishi Electric MELSEC-L LD75D, User Manual

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CHAPTER 12 CONTROL SUB FUNCTIONS
12
12.
7 O
ther
F
unct
ions
12.7.2
Skip function
The "skip function" is used to stop (deceleration stop) the control of the positioning data being executed at the time of
the skip signal input, and execute the next positioning data.
A skip is executed by a skip command ([Cd.37] Skip command) or external command signal.
The "skip function" can be used during control in which positioning data is used.
The details shown below explain about the "skip function".
• Control details
• Control precautions
• Setting the skip function from the CPU module
• Setting the skip function using an external command signal
(1) Control details
The following drawing shows the skip function operation.
(2) Control precautions
• If the skip signal is turned ON at the last of an operation, a deceleration stop will occur and the operation will
be terminated.
• When a control is skipped (when the skip signal is turned ON during a control), the positioning complete
signals [X14, X15, X16, X17] will not turn ON.
• When the skip signal is turned ON during the dwell time, the remaining dwell time will be ignored, and the
next positioning data will be executed.
• When a control is skipped during interpolation control, the reference axis skip signal is turned ON. When the
reference axis skip signal is turned ON, a deceleration stop will be carried out for every axis, and the next
reference axis positioning data will be executed.
• The M code ON signals [X4, X5, X6, X7] will not turn ON when the M code output is set to the AFTER mode
(when "1: AFTER mode" is set in "[Pr.18] M code ON signal output timing"). (In this case, the M code will not
be stored in "[Md.25] Valid M code".)
• The skip cannot be carried out by the speed control and position-speed switching control.
• If the skip signal is turned ON with the M code signal turned ON, the transition to the next data is not carried
out until the M code signal is turned OFF.
BUSYsignal
V
Deceleration by
skip signal
Start of the
next positioning
ON
OFF
OFF
OFF
OFF
ON
ON
ON
Positioning
Positioning start signal
Positioning complete signal
Skip signal
t
[XC, XD, XE, XF]
[Y10, Y11, Y12, Y13]
[X14, X15, X16, X17]