LSIS XBC-DR14E - Function

Chapter 10 DC Input Option Board
10 - 5
10.2.3 Function
(1) Counter mode
(a) High Speed counter module can count High Speed pulses which can not be processed by CPU module‟s
counter instructions (CTU, CTD, CTUD, etc.), up to binary value of 32 bits (-2,147,483,648 ~
2,147,483,647).
(b) Available input mode is 1-phase input, 2-phase input
(c) Count increasing/decreasing methods are as follows;
1) 1-phase input : a) Increasing/decreasing count operation by program setting
b) Increasing/decreasing count operation by B-phase input signal
2) 2-phase input : setting by difference in phase between A-phase and B-phase
(d) Auxiliary modes are as follows
1) Count Latch
(e) Input mode
1) 1-phase count mode
a) Increasing/decreasing count operation by program setting
• 1-phase 1-input 1-multiplication
A-phase input pulse is counted at rising and increasing/decreasing will be decided by the
program.
Increasing/Decreasing
classification
A-phase input pulse rising
A-phase input pulse falling
Increasing/decreasing count
setting signal Off
Increasing count
-
Increasing/decreasing count
setting signal On
Decreasing count
-
• Operation example
A-phase input pulse
Increasing
Decreasing
Increasing
Increasing/Decreasing
count setting signal
Count value
10
11
12
13
12
11
10
11
On
Off
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