How to solve Error Code 32

Fault code:

【32】Parallel control CAN communication failure

Reason:

1. Hardware connection issues

Wiring error: Check if CANH/CANL is connected in reverse (corresponding to the corresponding pin connected to the communication interface)

Abnormal terminal resistance: Ensure that 120 Ω terminal resistors are connected at both ends (high-speed CAN must be configured)

Power adapter issue: Check if the power supply of the rotary converter simulator is normal and if the voltage matches (such as a 5V adapter)

2. Configuration parameter issues

Inconsistent baud rate: All nodes must have the same baud rate (conventional 500k)

Channel configuration error: Confirm that the CAN card channel matches the channel of the rotary converter simulator (such as the channel corresponding to the Set_x command)

ACK response exception: Check if the receiving device is in normal mode to respond to the ACK signal

3. Signal interference issue

Electromagnetic interference: Check if there are strong magnetic field devices near the parallel system

Bus load too high: Optimize message priority to ensure bus utilization does not exceed 70%

Impedance mismatch: Check cable type (twisted pair required) and terminal resistance value  ‌  ‌‌

Solution:

1. Physical layer detection: Measure the bus voltage (differential voltage of about 2V) and whether the waveform is regular

2. Isolation test: Disconnect nodes one by one and locate faulty devices

3. Parameter verification: Confirm the consistency of parameters such as baud rate and ID filtering

4. Environmental inspection: eliminate environmental factors such as high/low temperature, humidity, etc

Note: Please do not dismantle the machine without permission, otherwise it will be out of the warranty of Ktech.