Relation With Other Functions; Relation With Rotary Axis Angle Designation (Mechanical Axis Specification) - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.27 3-Dimensional Manual Feed

14.27.10 Relation with Other Functions

14.27.10.1 Relation with Rotary Axis Angle Designation (Mechanical Axis Specification)

To perform the 3-dimensional manual feed for mechanical axis specifications, write the rotary axis angle to the R register via
user PLC program. The data input increment is the same as of the PLC setting increment (#1005 plcunit).
Rotary axis
motor
Mechanical
axis
 R register
$1 $2 $3 $4
R2628 R2828 R3028 R3228
R2629 R2829 R3029 R3229
R2630 R2830 R3030 R3230
R2631 R2831 R3031 R3231
 Data write example
The example below is when writing "90°" to A axis and "180°" to C axis in the A-C axis configuration.
When "#1005 plcunit" is B
<A axis>
90 × 1000 =
angle 1/1000°
<C axis>
180 × 1000 =
angle 1/1000°
 Precautions
(1) Rotation with the tool tip as the center is disabled during use of a mechanical axis.
(2) Do not change the rotary axis angle of a mechanical axis during the 3-dimensional manual feed.
Right after the rotary axis angle has been changed, the rotary axis operates by calculating the position in the hypothetical
coordinate system based on that angle. Therefore, the movement may fail to be along the hypothetical coordinate sys-
tem.
(3) When the mechanical axis' angle is written in the R register, only the tool tip value counter on the position display screen
is updated. Note that the other counters are not updated.
(4) For mechanical axis specifications, the contents of the tool tip value counter are not displayed.
Instead, the angle of the mechanical axis set in the R register is displayed in the [Rotation angle] counter on the tool tip
display screen.
(5) For mechanical axis specifications, the automatic operation handle interruption is not available for a rotary axis with the 3-
dimensional manual feed.
IB-1501668-B
[Mechanical position]
Counter
A, B, C axes
Mechanical axis spec.
[Rotary angle]
R register
R2628: 1st rotary
axis
R2630: 2nd rotary
axis
$5 $6 $7
R3428 R3628 R3828 R4028
R3429 R3629 R3829 R4029
R3430 R3630 R3830 R4030
R3431 R3631 R3831 R4031
90000 ┤├─[ DMOV K90000 R2628 ]─
system unit
180000 ┤├─[ DMOV K180000 R2630 ]─
system unit
CNC
Switching
Rotary axis
configuration
ROTAXT1 or 2
Display
process-
sing
$8 Abbrev. Description
Angle of the mechanical axis spec.
1st rotary axis
R2628 (lower)/R2629 (upper)
Angle of the mechanical axis spec.
2nd rotary axis
R2630 (lower)/R2631 (upper)
758
X axis
Y axis
Z axis
A axis
B axis
C axis
Manual pulse
generator
Display
Setting range
0 to ±720000
(1deg./1000)
0 to ±720000
(1deg./1000)