Outline Of Positioning Operation - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
7.2

Outline of Positioning Operation

The relationship between the operation speed, acceleration/deceleration and travel distance of the
positioning operation is shown below.
For futher details on the positioning operations suppurted by 20SSC-H and a note on positioning cautions,
refer to the following.
In individual axis operation
Speed Acceleration
time
Max. speed
Trapezoidal
acceleration/
deceleration
Approximate S-shaped
Positioning
acceleration/deceleration
completion flag
OFF
Parameters and control data used for positioning operation
Item
Maximum speed
Operation speed 1 BFM #503,#502
Operation Operation speed 2 BFM #507,#506
speed
JOG speed
Acceleration time
Deceleration time
Target address 1
Travel
distance
Target address 2
Acceleration/deceleration
mode
Interpolation time constant
Positioning completion
→ For a note on positioning cautions, refer to the next page.
→ For positioning operation except for that of table operation, refer to Chapter 9
Deceleration
time
Operation
speed
Time
S-shaped time
constant
(fixed at 64ms)
ON
BFM number
X-axis
BFM BFM
#14009,#14008 #14209,#14208
BFM #603,#602
BFM #607,#606
BFM BFM
#14013,#14012 #14213,#14212
BFM #14018 BFM #14218
BFM #14020 BFM #14220
BFM #501,#500 BFM #601,#600
BFM #505,#504 BFM #605,#604
BFM #14000 b11 BFM #14200 b11
BFM #14022 BFM #14222
BFM #28 b6 BFM #128 b6
7 Before Starting Positioning Operation
→ For manual operation, refer to Chapter 8
→ For table operation, refer to Chapter 10
In simultaneous two-axis operation
(interpolation operation)
Interpolation time
Speed
constant
Trapezoidal
acceleration/
deceleration
Positioning
completion flag
OFF
Y-axis
Upper limit of speed in each operation mode
Actual operation speed in each operation mode
Actual operation
operation and interrupt two-speed positioning
Manual forward/reverse (JOG+/JOG-) operation speed
Time needed to reach from zero speed to the maximum
speed
Time needed to reach from the maximum speed to the
zero speed
Target position (absolute address) or travel distance
(relative address) in each operation mode
Target position (absolute address) or travel distance
(relative address) for two-speed positioning operation
Select the acceleration/deceleration control method
(approximate S-shaped acceleration/deceleration or
trapezoidal acceleration/deceleration).
In interpolation operation, this mode handles trapezoidal
acceleration/deceleration only even if the approximate S-
shaped acceleration/deceleration is selected.
Acceleration/deceleration time for interpolation
operation.Time to reach from zero speed to the operation
speed (for acceleration) or time to reach from the
operation speed to the zero speed (for deceleration)
The flag is reset at the beginning of each operation or at
the error occurrence, and it is set upon normal completion.
However, the flag is not set during stop operation or the
following operation even if operation is normally finished
- JOG operation
- Mechanical zero return (data setting type)
- Manual pulse generator operation
- Variable speed operation
7.2 Outline of Positioning Operation
Interpolation time
constant
Max. speed
Operation
speed
Time
ON
Description
speed for two-speed positioning
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