Programmable stepping motor loop tester and testing method

The invention discloses a programmable stepping motor loop tester, which comprises a tester body, and is characterized in that the tester body comprises a main controller, a motor driver, a liquid crystal display, a key operation panel and a voltage regulator, wherein a reading module used for data reading, a storage module used for data storage, a control module used for controlling assembly operation, a calculation module used for data algorithm calculation and a detection module used for detecting motor loop voltage, step subdivision and pulse frequency PPS parameters are arranged in the main controller. The main controller is further connected with a loop power supply, and the motor driver is connected with a stepping motor. The loop tester can compile an action text according to the actual rotation requirement of the motor and automatically convert the action text into a motor control instruction, so that the motion performance of the motor is tested, the professional technical requirements of motor test