Mitsubishi Electric MELSEC-LD77MS2 User Manual page 720

Control type
Machine OPR control
OPR control
Fast OPR control
Position
control
Major
positioning
control
1 to 4-axes speed control
Speed-position switching control
Position-speed switching control
Other
control
JOG operation, Inching operation
Manual
control
Manual pulse generator operation
Expansion
Speed-torque control
control
: Check valid
: Check is not made when the current feed value is not updated (Refer to
in "
Software stroke limit selection
Pr.14
– : Check not carried out (check invalid).
: Valid only when "0: valid" is set in the "
1 : The value in "
Md.20
2: When the unit is "degree", check is not made during speed control.
3: When the unit is "degree", check is not carried out.
[2] Software stroke limit check details
An error shall occur if the current value
*2
1)
limit range .
(Check "
Current feed value
Md.20
An error shall occur if the command address is outside the software
2)
stroke limit range.
(Check "
Positioning address/movement amount
Da.6
1: Check whether the "
Software stroke limit selection
2: Moveable range from the "
stroke limit lower limit value
[3] Relation between the software stroke limit function and various
controls
Data set method
Other than "Data
set method"
1-axis linear control
2 to 4-axes axis linear
interpolation control
1-axis fixed-feed control
2 to 4-axes fixed-feed control
(interpolation)
2-axis circular interpolation
control
Current value changing
JUMP instruction, NOP
instruction, LOOP to LEND
" during speed control.
Pr.15
" will differ according to the "
Current feed value
Check details
*1
is outside the software stroke
" or "
Machine feed value
Md.21
" or "
Current feed value
Md.20
".
Software stroke limit upper limit value
Pr.12
".
Limit
check
The current value will not be changed if the home
position address is outside the software stroke limit
range.
–
Check not carried out.
–
Checks 1) and 2) in the previous section [2] are carried
out.
For speed control : The axis decelerates to a stop
For position control: The axis comes to an immediate
*1, *2
*1, *2
The current value will not be changed if the new
current value is outside the software stroke limit range.
– Check not carried out.
*3 Check 1) in the previous section [2] is carried out.
The machine will carry out a deceleration stop when
the software stroke limit range is exceeded. If the
address is outside the software stroke limit range, the
* 3
operation can only be started toward the moveable
range.
Check 1) in the previous section [2] is carried out.
The mode switches to the position control mode when
the software stroke limit range is exceeded, and the
operation immediately stops.
Software stroke limit valid/invalid setting
Pr.21
13 - 30
Chapter 13 Control Sub Functions
".)
".)
Machine feed value
Md.21
" to the "
Processing at check
when it exceeds the software
stroke limit range.
stop when it exceeds the software
stroke limit range.
) at the setting of "current feed value"
Pr.21
".
Current feed value during speed control
Processing when
an error occurs
The error
"Software stroke
limit +" (error
code: 507) or
"Software stroke
limit -" (error code:
508) will occur.
" is set in "
Pr.14
Software
Pr.13
" setting.