Delta Electronics DVP15MC11T Operation Manual page 482

relationship, the slave axis position 100 will correspond to its cam phase 200 as shown in the
following circumstance 2.
Cas e 1
Pl an ned Ca m Cu r ve
Slav e ax is phas e
300
0
C ase 2
Pl an n ed C am Cu r v e
Sl av e ax i s p h ase
200
0

Absolute mode
When the MasterAbsolute parameter is TRUE, the master axis position and its cam phase are in
the absolute relationship. At any time, the master axis cam phase is equal to the remainder got by
dividing the master axis position at that time by the maximum value of the master axis cam phase
in the cam relationship.
For example, the master axis is in absolute mode and the maximum value of the master axis in the
cam relationship is 360. So its cam phase is 100 as the master axis position is 100 (100=100%360);
its cam phase is 140 (140=500%360) as the master axis position is 500 and so on. The master
axis position corresponds to its cam phase as shown in the figure below.
-720
When the SlaveAbsolute parameter is TRUE, the slave axis position and its cam phase are in the
absolute relationship. At any time, the slave axis cam phase is equal to the remainder got by
dividing the slave axis position at that time by the maximum value of the slave axis cam phase in
the cam relationship. When the slave axis is in absolute mode, the corresponding relationship
between the slave axis position and its cam phase is consistent with that between the master axis
position and its cam phase when the master axis is in absolute mode.

Offset and Scaling
The cam relationship between the master axis and slave axis is preplanned. But as the cam motion is
executed, the position offset or scaling based on the preplanned cam relationship can be performed
through setting the Offset and Scaling parameters. For example, there are various sizes for the same
product which is processed. Just one cam relationship need be planned and then changing the values
of Offset and Scaling fits the processing of products of different sizes.
The MasterOffset parameter is valid only when the master axis is in absolute or relative mode.
(MasterAbsolute=TRUE or FALSE). The SlaveOffset parameter is valid only as the slave axis is in
Master
180 360
- 620
axis phase
Mas te r
360
ax is p has e - 460
Mast er axi s c am p hase
360
0
-360
Chapter 12 Troubleshooting
Sl ave ax is cam p hase
360
0
- 260 100 460
Sl ave axi s cam ph as e
360
200
0 S lav e a xi s p o si t io n
- 100 100 260
M aster ax is po si t io n
360 720
Slav e ax is p osi ti on
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