Lite-On Technology Corp.
Industrial Automation
228
Pi
11.3.3. PUU value
PUU is signed 32 bits absolute position signal. When motor rotating in positive direction, value
increases; When motor rotating in negative direction, value decreases. Positive direction is defined in PA-00,
not depend on CW or CCW.
If the motor continues rotating in same direction, and number of turns exceed -32768~ +32767, AL035
will be triggered. If PUU value exceed -2147483648 ~ 2147438647, the position overflow warning AL038
will be triggered, and need to re-initialize to relieve warning. AL035 and AL038 warning can be disable by
PD-57. When rotating in positive direction and over the maximum PUU value, the value change from
2147483647 to -2147483648. When rotating in negative direction and over the minimum PUU value, the
value change from -2147483648 to 2147483647.
Follow is the example of overflow:
If electronic gear ratio is 10(e.g. PA-09 = 10, PA-10 = 1),
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