Mitsubishi Electric A173UHCPU Programming Manual page 56

3. POSITIONING SIGNALS
Pass points in constant
speed control
(here, a change is
designated at P3)
Speed switching piont
designation flag (M2040)
SVST instruction
Start accept flag
(M2001+20n)
(3) PC link communication error flag (M2034) ........... Signal sent from PCPU to
SCPU
This flag comes ON when an error occurs during personal computer linking
communication.
OFF : No PC link communication error
ON : PC link communication error detected
(Flag changes to OFF if normal communication is restored.)
For details on PC link communication error, see APPENDIX 2-5.
(4) Speed switching point designation flag (M2040)..................... Signal sent from
SCPU to PCPU
OS SV13
Device No.
The speed switching point designation flag is used when a speed change is
designated at the pass point in constant speed control.
(a) By turning M2040 ON before the start of constant speed control (before the
servo program is started using the SVST instruction), control can be
executed with a speed change at the start of the pass point.
• OFF ..........Speed is changed to a designated speed at a pass point in
• ON
..........Speed has been changed to a designated speed at a pass
M2040 OFF
V
P1 P2 P3 P4
OFF
ON
OFF
SV22
M2040
constant speed control.
point in constant speed control.
t
Pass points in constant
speed control
(here, a change is
designated at P3)
Speed switching piont
designation flag (M2040)
SVST instruction
Start accept flag
(M2001+20n)
3 − 25
M2040 ON
V
P1 P2 P3 P4
ON
OFF
ON
OFF
t