How is the forward and reverse rotation of the stepping motor realized, and what is the direction signal of the stepping motor? The direction level signal DIR is used to control the rotation direction of the stepping motor. This end is at the high level, and the motor rotates in one direction; This end is the low level, and the motor is the other steering. The motor commutation must be carried out after the motor stops, and the commutation signal must be sent after the end of the next CP pulse in the previous direction and before the next CP pulse in the next direction. When your controller (upper computer) sends double pulses (positive and negative pulses) or the amplitude of the pulse signal does not match, we need to use our signal module to convert it to 5v single pulse (pulse plus direction).
1. The dial switch input to the single pulse signal module should be turned to the "single pulse" position. The motor rotates when there is pulse output. The motor rotation direction can be changed by changing the high and low level of the direction signal. Refer to the signal module specification for specific timing.
2. The dial switch input to the dual pulse signal module should be turned to the "dual pulse" position. When a positive pulse is sent, the motor rotates forward; When a negative pulse is sent, the motor reverses. Positive and negative pulses cannot be given at the same time, and the specific timing can refer to the signal module specification. How to adjust the running direction of the stepping motor which is opposite to the requirements? There are two ways to achieve this: one is to change the direction signal of the control system. Another method is to change the direction by adjusting the wiring of the stepping motor. The specific method is as follows: For two-phase motors, just switch the motor line of one phase to the stepping motor driver, such as A+and A - exchange.
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