Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 86

CAUTION
Do not turn the start accept flags ON/OFF in the user side.
• If the start accept flag is turned off using the program or user operation while this flag is on, no error will occur but the positioning operation will not be
reliable. Depending on the type of machine, it might operate in an unanticipated operation.
• If the start accept flag is turned on using the program or user operation while this flag is off, no error will occur but the "start accept on error" will occur at the
next starting and cannot be started.
[St.1047] Speed change accepting flag (R: M30144+n/Q: M2061+n)
This flag turns on at start of speed change by the control change (CHGV) instruction (or Motion dedicated PLC instruction
(M(P).CHGV/D(P).CHGV) of the Motion SFC program.
CHGV instruction
[St.1047] Speed change
accepting flag
(R: M30144/Q: M2061+n)
Setting speed
[St.1048] Automatic decelerating flag (R: M30208+n/Q: M2128+n)
This signal turns on while automatic deceleration processing is performed during the positioning control or position follow-up
control.
• This flag turns on while automatic deceleration to the command address at the position follow-up control, but it turns off if
the command address is changed.
• This signal turns on while automatic deceleration processing is performed during execution of positioning to final point while
in continuous trajectory control.
[St.1048] Automatic
decelerating flag
(R: M30208+n/Q: M2128+n)
[St.1048] Automatic
decelerating flag
(R: M30208+n/Q: M2128+n)
Set a travel value in which automatic deceleration processing can be started at the final positioning point,
therefore the automatic decelerating flag turns on at the start point of automatic deceleration processing after
this final point.
2 POSITIONING DEDICATED SIGNALS
84
2.1 Internal Relays
ON
OFF
0 to 4 ms
Speed change completion
V
P1
ON
OFF
V
P1
ON
OFF
Speed change
Speed after
speed change
t
P2
t
P3
"[St.1048] Automatic decelerating flag (R: M30208+n/Q: M2128+n)
turns ON after the execution of positioning to final point (P3) even
if automatic deceleration processing starts while executing the
positioning to P2.
P2
t
P3