If the AB channel is connected reversely, an error will be reported.
First adjust to open loop, control the motor, use the panel to detect, and at the same time look at the given speed and the encoder feedback speed. If the difference is large, check whether the encoder is broken, or whether the motor's rated speed is Are the class parameters set incorrectly?
Encoders are divided into long-line and push-pull types. Are they compatible with the encoder board?