Mitsubishi Electric MELSEC-LD77MS2 User Manual page 537

Current feed value during 1-axis speed control
The following table shows the "
control corresponding to the "
"
Current feed value during speed control
Pr.21
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
V
In speed control
Current feed value during speed control start is maintained
(a) Current feed value not updated
Restrictions
(1) Set "Positioning complete" in "
path control not possible" (error code: 516) will occur and the operation cannot
start if "continuous positioning control" or "continuous path control" is set in
"
Da.1
("Continuous positioning control" and "continuous path control" cannot be set
in speed control.)
(2) Set the WITH mode in "
code. The M code will not be output, and the M code ON signal will not turn
ON if the AFTER mode is set.
(3) The error "No command speed" (error code: 503) will occur if the current
speed (-1) is set in "
(4) The software stroke limit check is not carried out if the control unit is set to
"degree".
Pr.21
setting
V
In speed control
t
Current feed value is updated
(b) Current feed value updated
".
Operation pattern
Pr.18
Command speed
Da.8
9 - 77
Chapter 9 Major Positioning Control
Current feed value
Md.20
Current feed value during speed control
"
Md.20
The current feed value at speed control start
is maintained.
The current feed value is updated.
The current feed value is fixed at 0.
t
Operation pattern
Da.1
M code ON signal output timing
".
" during 1-axis speed
" settings.
Current feed value
V
In speed control
0
(c) Current feed value zero cleared
". The error "Continuous
" when using an M
t