Check whether there is a 12V voltage output at the limit position of the motherboard. There is no possibility that the motherboard has a problem. Use a metal sheet to block the head of the reset switch, the main board lights up red, and the tail of th

Basic concept: A. Limit photoelectric switch: (wing gate is used for position control), there are 3 lines in total, 2 of which are power input, brown: + 12V, blue: GND and 1 signal output, when the sensor head touches the magnet Or metal objects (sens

Basic concept: A. Limit photoelectric switch: (wing gate is used for position control), there are 3 lines in total, 2 of which are power input, brown: + 12V, blue: GND and 1 signal output, when the sensor head touches the magnet Or metal objects (sens