LSIS XBE-DC08A, User Manual

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Chapter 4 Built-in High-speed Counter Function
4-7
(2) Counter mode
2 types of count (Linear counter, Ring counter) can be selected for the applicable use based on functions.
• Counter mode is saved at the following special K area.
Mode
Area per each channel (word)
Ref.
Ch.0 Ch.1 Ch.2 Ch.3 Ch.4 Ch.5 Ch.6 Ch.7
Counter
mode
%KW300 %KW330 %KW360 %KW390 %KW2220 %KW2250 %KW2280 %KW2310
0 : linear
1 : ring
(a) Linear counter
• Linear Count range: -2,147,483,648 ~ 2,147,483,647
• If count value reaches the maximum value while increased, Carry will occur, and if count value reaches the
minimum value while decreased, Borrow will occur.
• If Carry occurs, count stops and increasing is not available but decreasing is available.
• If Borrow occurs, count stops and decreasing is not available but increasing is available.
Borrow
Carry
-2,147,483,648
2,147,483,647
Input
pulse
Count
Count start