Configuration For Positioning - Mitsubishi Electric MR-J3-T Quick Start Manual

Positioning with Digital Inputs
4.4

Configuration for Positioning

If you install the MR-J3-D01 I/O expansion you can use point table positioning, which allows you
to select positions from a list of up to 256 table entries with a combination of eight digital inputs.
Table 4-3 shows how binary input signals are encoded to address the point table entries.
DI7
0
0
0
0
·
·
·
1
1
Table 4-3: Selection of point table entries with digital input signals
In the factory default configuration the incremental system is activated, which means that the
absolute position detection system is turned off (PA03 "absolute position detection system").In
this mode the current position is not stored when the power is turned off and you must thus per-
form a home position return every time the amplifier is powered on. The default configuration
also uses absolute target positions (PA01 "positioning control mode").
No.
PA01
PA03
PA05
Table 4-4: Parameter reference
To activate this parameter you must switch the amplifier power off and on again.
MR-J3-T
Digital Input Signals
DI6 DI5 DI4
0 0 0
0 0 0
0 0 0
0 0 0
· · ·
· · ·
· · ·
1 1 1
1 1 1
Code Function
*STY Positioning control
mode
*ABS Absolute position
detection system
*FTY Feed length multi-
plication factor
DI3 DI2 DI1
0 0
0 0
0 0
0 1
· ·
· ·
· ·
1 1
1 1
Description
0: Absolute target position values
1: Incremental target position values
0: Incremental system (absolute detection off)
1: Absolute position detection system on
Needed here to scale the home position value to the physical coor-
dinate system when a home position offset (shift) has been set.
Parameter Multiplication
value factor STM
0 1
1 10
2 100
3 1000
Configuration for Positioning
Selected Point
Table Entry
DI0
0 1 1
1 0 2
1 1 3
0 0 4
· ·
· ·
· ·
1 0 254
1 1 255
Range of the target
position values
−999.999 .. +999.999
−9999.99 .. +9999.99
−99999.9 .. +99999.9
−999999 .. +999999
·
·
·
4 - 23