Delta ASD-A2R-0221 Series - Page 271

Chapter 8 ParametersASDA-A2R Series
Revision December, 2014
8-39
 Logic Type
High-speed and Low-speed pulse input
Logic Pulse Type Forward Reverse
0
Positive Logic
A Pulse Phase Lead A Pulse Phase Lag
AB phase
pulse
CW and
CCW pulse
High-speed pulse input
Logic Pulse Type Forward Reverse
0
Positive
Lo
g
ic
Pulse +
Symbol
Sign = high Sign = low
Low-speed pulse input
Logic Pulse Type Forward Reverse
0
Positive
Lo
g
ic
Pulse +
Symbol
Sign = low Sign = high
For digital circuit, it uses 0 and 1 represents two status, which is high voltage and low
voltage. In Positive Logic, 1 represents high voltage and 0 represents low voltage and
vice versa in Negative Logic.
For example:
Positive Logic Negative Logic