
The RS485 interface of the industrial AI edge gateway can be configured to output AI inference results in transparent transmission mode. To ensure that the serial data does not have bit errors under the interference of industrial frequency converters, a TVS ESDSM712 should be connected in parallel on the RS485 driver side, and a common mode inductor CML3225A-510T should be connected in series. At the same time, 10kΩ pull-up and pull-down resistors and a 120Ω terminating resistor should be connected in parallel to ground on the AB lines. The cable shielding layer is connected to ground at one end. After EN 61000-4-4 2kV EFT test, the AI result output baud rate is 115200bps and the bit error rate is <10^-9.