ASDA-B2
Chapter 6 Control Modes of Operation
Revision May, 2018
6-5
Logic Type
High-speed and Low-speed Pulse Input
Logic
Pulse Type
Forward Rotation
Reverse Rotation
0
Positive Logic
Pulse Phase Lead
Pulse Phase Lag
AB Phase
Pulse
Clockwise
and Counter-
clockwise Pulse
High-speed Pulse Input
Logic
Pulse Type
Forward Rotation
Reverse Rotation
0
Positive Logic
Pulse +
Symbol
Sign = high
Sign = low
Low-speed Pulse Input
Logic
Pulse Type
Forward Rotation
Reverse Rotation
0
Positive Logic
Pulse + Symbol
Sign = low
Sign = high
Digital circuits use 0 and 1 to represent the high and low voltage levels. In positive logic,
1 represents high voltage and 0 represents low voltage; in negative logic, 1 represents low
voltage and 0 represents high voltage.
For example:
Positive Logic
Negative Logic
