AVAL APX-3302, Руководство пользователя

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APX-3302 User's Manual (OM110000019A)
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6.11.3 Absolute position encoder multi point
Absolute position encoder single point is the expanded mode of Absolute position encoder multi point.
It can generate coincidence pulse at any points you choose up to 256 during counting absolute count.
This mode is suitable for capturing using stage by Area camera, for example capturing interval is not
constant.
Figure6-31: Absolute position encoder multi point
Comparison register does not exist in this mode.
Instead of comparison register, it has 256 comparison memories that are mapped in internal register area,
and it can generate coincidence pulse at certain count value.
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The setting example for software
The sample code for capturing from point 1 to point 9 each by Absolute position encoder multi point is as
follows. The setting of encoder and the coordinate of each point that is shown at
“Figure6-31: Absolute
position encoder multi point
” is shown below.
[Encoder setting]
Select Encoder : Absolute position encoder multi point
Encoder starting method : Not using external trigger
Encoder operational mode : Encoder scan mode
Select Encoder input impulse-wave : Phase AB
Direction of encoder input impulse wave: CW direction
Encoder Z phase input : Not using Z phase
Time
Absolute counter value
Starting
point
Point 1
Point 2
Point 3
Point 4
Point 5
Point 6
Point 7
Point 8
Point 9
Stage stopped
Stage proceed Stage return