For communication between frequency converters and PLCs requiring anti-interference performance, which connector should be selected?

Q: For communication between frequency converters and PLCs requiring anti-interference performance, which connector should be selected?

A: Choose shielded M12 D-code connectors (8Pin) with double-layer shielding. The inner layer is aluminum foil shielding (against high-frequency interference), and the outer layer is braided mesh shielding (against low-frequency interference), with a shielding effectiveness of ≥80dB. It can resist harmonic interference (300Hz~1MHz) generated during the operation of frequency converters, ensuring stable Modbus communication signals (transmission rate 115200bps) and preventing PLC from triggering control commands by mistake.