Mitsubishi Electric SV13/22 Programming Manual page 53

3. POSITIONING SIGNALS
DSFRP/SVST
instruction
Start accept flag
(M2001+n)
Positioning completed
(M1601+20n)
Positioning start
completed (M1600+20n)
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(d) When M2000 is switched from ON to OFF, the following processing is
executed.
1) Processing details
• The PCPU READY-completed flag (M9074) is turned OFF.
• The axis being driven is decelerated to a stop.
POINT
The PLC READY flag (M2000) goes OFF when the servo system CPU is in
the STOP status. When the RUN status is re-established, the status is the
same as before the STOP was executed.
M2000
Switch from RUN to STOP
(2) Start accept flag (M2001+n)...........Signal sent from PCPU to SCPU
(a) The start accept flag comes ON when the positioning start (DSFRP/ SVST)
instruction is executed in the sequence program: use it as an interlock to
enable or disable execution of the DSFRP/SVST instruction.
Example
When requesting execution of the servo programs for positioning on axis 1
and axis 3, use the start accept flags in the way shown below.
(b) The start accept flag ON/OFF processing takes the following form.
1) The start accept flag for the designated axis comes ON in response to a
DSFRP/SVST instruction, and goes OFF on completion of positioning.
The start accept flag will also go OFF if positioning is stopped part way
through.
(However, if positioning is stopped part way through by a speed change
to speed 0, the start accept flag will remain ON.)
Positioning completed normally
V
Positioning
completion
ON
OFF
ON
OFF
search engine
ON
OFF
DSFRP/SVST instruction execution request
DSFRP/SVST instruction execution
enable/disabled specification
M2001 M2003
Axis 1 start Axis 3 start
accept flag accept flag
Positioning stopped part way through
Dwell time
t
DSFRP/SVST
instruction
Start accept flag
(M2001+n)
Positioning completed
(M1601+20n)
Positioning start
completed (M1600+20n)
3 − 20
Switch from STOP to RUN
J1J3 K1
SVST
V
Positioning
Stopped part
start
way through
ON
OFF
OFF
ON
OFF
t