Skip Function - Mitsubishi Electric A1SD75P1-S3 User Manual

12 CONTROL AUXILIARY FUNCTIONS

12.6.2 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.29 Skip command) or external start signal.
The "skip function" can be used during control in which positioning data is used.
The details shown below explain about the "skip function".
(1) Control details
Positioning start signal
BUSYsignal
Positioning complete signal
Positioning
Skip signal
Fig. 12.33 Operation when a skip signal is input during positioning control
(2) Precautions during control
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(1) Control details
(2) Precautions during control
(3) Setting the skip function from the PLC CPU
(4) Setting the skip function using an external start signal
The following drawing shows the skip function operation.
ON
OFF
[Y10, Y11, Y12]
ON
OFF
[X4,X5,X6]
OFF
[X7,X8,X9]
V
OFF
(a) If the skip signal is turned ON at the last of an operation, a deceleration stop
will occur and the operation will be terminated.
(b) When a control is skipped (when the skip signal is turned ON during a
control), the positioning complete signals (X7, X8, X9) will not turn ON.
(c) 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.
(d) 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 both axes, and the next reference
axis positioning data will be executed.
(e) The M code ON signals (XD, XE, XF) will not turn ON when the M code
output is set to the AFTER mode (when "1: AFTER mode" is set in " Pr.19
M code ON signal output timing").
(In this case, the M code will not be stored in " Md.32 Valid M code".)
Start of the
Deceleration by
next positioning
skip signal
ON
12 - 55
MELSEC-A
ON
t