Is it okay to extend the stepper motor line 100 meter?

You can't. The extended distance is too long, which may lead to the attenuation of the transmission signal, thus affecting the operation effect of the motor, generally not exceeding 50 meters. Stepper motor is a kind of motor that converts electric pulse signal into rotary motion. Compared with DC motor or AC motor, stepping motor has the advantages of high precision, adjustable speed, silence and low power consumption, and is widely used in modern industrial automation, digital equipment, communication equipment, medical equipment and other fields.