Mitsubishi A1SD75M3 User Manual page 406

9 MAIN POSITIONING CONTROL
Speed
Current feed value during speed control start is maintained
(a) Current feed value not updated
Current feed value during speed control
The following table shows the " Md.29 Current feed value" during speed control
corresponding to the " Pr.22 Current feed value during speed control" settings.
" Pr.22 Current feed value during speed
control" setting
0: Do not update current feed value
1: Update current feed value
2: Zero clear current feed value
In speed control
t
Restrictions
(1) Set "Positioning complete" for " Da.1 Operation pattern." If "continuous
positioning control" or "continuous path control" is selected, an error
"continuous path control not possible" (error code: 516) occurs, resulting in a
failure to start. (In the speed control mode, "continuous positioning control" or
"continuous path control" cannot be selected.)
(2) To use M codes, set the "WITH" mode for " Pr.19 M code ON signal output
timing." If the "AFTER" mode is selected, the M codes are not output and the
"M code ON" signal does not turn ON.
(3) The current speed (-1) cannot be set for " Da.7 Command speed." If the
current speed is set, an error "no command speed" (error code: 503) occurs.
(4) The software stroke limit check is not made with the "degree" unit.
(5) When the absolute position restoration mode is the "infinite length mode",
executing speed control with other than "1" set to "
during speed control" results in an error "control method setting error" (error
code: 524).
The current feed value during speed control
start is maintained.
The current feed value is updated.
The current feed value is fixed at 0.
In speed control
Speed
Current feed value is updated
(b) Current feed value updated
9 - 48
MELSEC-A
Md.29 Current feed value
In speed control
Speed
t
0
(c) Current feed value zero cleared
Current feed value
Pr.22
t