ASDA-A2 Chapter 12 Absolute System
12-16 Revision February, 2017
12.3.2 Pulse Counting
When the motor is running in clockwise direction, the counting number of turns will be minus where
the counter clockwise rotating is plus. The number range for turns is from -32768 to 32767. The
fault code, AL062 will appear when exceeding this counting range and it can be cleared by
resetting the coordinate system. If parameter P2-70 has been set to ignore the over range alarming,
the AL062 is disabled even exceeding the counting range. When the value reaches its largest
number, it will rewind. For the counter clockwise counting, the sequence of the number is …32767,
-32768, -32767, -32766 …. and the clockwise will have a sequence like …-32768, 23767,
32766 ….
In addition, there are 1280000 pulses (0~1279999) in one rotation. Please pay attention on its
direction. The communication or digital inputs/digital outputs can be used to read it.
Pulse number for the distance = m (turn) × 1280000 + pulse number within one turn
(0~1279999)
The conversion between Pulse and PUU:
When the rotating direction is CCW defined in P1-01.
PUU number = pulse number ×
)441(
)451(
ï€
ï€
P
P
+ (P6-01)
When the rotating direction is CW defined in P1-01.
PUU number = (-1) × pulse number ×
)441(
)451(
ï€
ï€
P
P
+ (P6-01)
Figure 12.1 Pulse counting in absolute coordinate system
To Next Page
Loading...
Need help?
General
