3 Control interfaces
70 Festo – GDCP-CMMS/D-FW-EN – 1404NH – English
3.4.4 Pulse/direction signals (CLK/#CLK/DIR/#DIR)
Through these signals, the motor controller can be controlled by a stepper motor c ontrol card.
Signal
Description
CLK/#CLK Pulse signals for control of the rotations/speed.
DI R/#DIR Direction signals for c ontrol of the direc tion of rotation.
– DIR = high: Positive direction of rotation
– DIR = low: Negative direction of rotation
Tab. 3.12 Pulse/direction signals (CLK/#CLK/DIR/#DIR)
Timing diagram: Pulse/direction signals
Pulse signal: CLK
Pulse signal:
#CLK
Direction signal: DIR
Direction signal: #DIR
Pulse period
Direction of rotation “positive”
Direction of rotation “negative”
Rotor position
Fig. 3.12 Timing diagram: Pulse/direction signals
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