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Operation Theorem
4.4
Pulse Input and Position Compare
4.4.1
Pulse Input
The PCI-8136M has 6 32-bit pulse input channels for encoder counter. It can
accept 3 kinds of pulse input:
1.
Plus and minus pulses input (CW/CCW mode).
2.
90°phase difference signals(AB phase mode).
3.
Pulse and direction input(Pulse/DIR).
90°phase difference signals may be selected to be multiplied by a factor of
1,2 or 4x AB phase mode is the most commonly used for incremental
encoder input. For example, if a rotary encoder has 2000 pulses per phase (A
or B phase), then the value read from the counter will be 8000 pulses per turn
or –8000 pulses per turn depends on its turning direction. These input modes
can be selected by software function call.
Plus and Minus Pulses Input Mode (CW/CCW Mode)
In this mode, pulse from EA causes the counter to count up, whereas EB
caused the counter to count down.
EA
EB
Negative Direction
EA
EB
Summary of Contents for PCI-8136M
Page 1: ...PCI 8136M 6 Axis Motion Controller Card User s Guide ...
Page 2: ......
