Allen-Bradley FLEX I/O 1794-IP4, Руководство пользователя, Страница: 12 / 70

1–2 Overview of the Pulse Counter Module
Publication 1794-6.5.16 – September 1998
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Gavanically Isolated
dc/dc Converter
In5V dc
12–24V dc
0V
Serial Bus
Bus Interface
Optocouplers
Logic
Logic
Logic
Logic
16–bit Counter
16–bit Counter
16–bit Counter
16–bit Counter
16–bit Counter
16–bit Counter
16–bit Counter
16–bit Counter
Control Word
N D
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–
+
–
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–
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–
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–
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–
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–
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–
N
D
N
D
N
D
N
D
Configuration is selected by setting A (below) in the appropriate
position (variable SelectMeasureType). The arrows show signals
(control words and registers) controlled by the control system.
Gate Control
1–128 periods
16–bit Counter
16–bit Counter
1MHz
10MHz
Clock
&
A