Counter Features - Advantech AMAX-5000 Series User Manual

6.1.7

Counter Features

These features are all applied for either Encoder Mode or Bi-Direction Mode. The
PDO index is listed on 6.1.7 Object description and parameterization.
6.1.7.1 Overflow/Underflow Detection and Reload Counter
Overflow and Underflow
When counter value exceeds the counter boundaries, the CIn_Over_Flow
(0x60n0:04) or CIn_Under_Flow (0x60n0:05) will be set to "1" correspondingly. The
boundaries can be 0x00/0xFFFFFFFF or 0x00/Cn_Reload_Counter_Values (when
the reload counter is set).
The figure below shows an example of overflow/underflow behavior under Bi-direc-
tion Mode, the same behavior also applies for Encoder Mode.
Blue are 0x6000, 0x7000, 0x8000 parameters.
Red are external signals.
n=0~1 for Ch0~1
AMAX-5000 Series User Manual
Figure 6.9 Counter Overflow and Underflow
112