INSTRUCTION INTERPRETATION
#PVT
Label
PVA = 500,2000,500
1
st
point in Figure 6.17 - A axis
PVB = 500,5000,500
1
st
point in Figure 6.17 - B axis
PVA = 1000,4000,1200
2
nd
point in Figure 6.17 - A axis
PVB = 4500,0,1200
2
nd
point in Figure 6.17 - B axis
PVA = 1000,4000,750
3
rd
point in Figure 6.17 - A axis
PVB = -1000,1000,750
3
rd
point in Figure 6.17 - B axis
BTAB
Begin PVT mode for A and B axes
PVA = 800,10000,250
4
th
point in Figure 6.17 - A axis
PVB = 200,1000,250
4
th
point in Figure 6.17 - B axis
PVA = 4000,0,1000
5
th
point in Figure 6.17 - A axis
PVB = -900,0,1000
5
th
point in Figure 6.17 - B axis
PVA = 0,0,0
Termination of PVT buffer for A axis
PVB = 0,0,0
Termination of PVT buffer for B axis
EN
NOTE: The BT command is issued prior to filling the PVT buffers and additional PV commands are added
during motion for demonstration purposes only. The BT command could have been issued at the end
of all the PVT points in this example.
The resultant X vs. Y position graph is shown in Figure 6.17, with the specified PVT points enlarged.
Contour Mode
The DMC-40x0 also provides a contouring mode. This mode allows any arbitrary position curve to be prescribed for
1 to 8 axes. This is ideal for following computer generated paths such as parabolic, spherical or user-defined
profiles. The path is not limited to straight line and arc segments and the path length may be infinite.
Specifying Contour Segments
The Contour Mode is specified with the command, CM. For example, CMXZ specifies contouring on the X and Z
axes. Any axes that are not being used in the contouring mode may be operated in other modes.
Chapter 6 Programming Motion ▫ 100 DMC-40x0 User Manual
Figure 6.17: X vs Y Commanded Positions for Multi-Axis
Coordinated Move
X vs Y Commanded Positions
-1000
0
1000
2000
3000
4000
5000
6000
0 1000 2000 3000 4000 5000 6000 7000 8000
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