说明：  C320 系列变频器提供标准 RS485 通信接口，用户可通过 PC/PLC 实现集中监控（发送运行命令设定， 变频器的工作参数和读取变频器的工作状态） ，以适应特定的使用要求。本附录的协议内容即是为实现上述功 能而设计的。
(C320 series inverter provides a standard RS485 communication interface, users can PC/PLC for centralized monitoring (send run command set, the working parameters and frequency converter to read the work of the inverter state) to meet specific requirements. Agreement that this appendix is designed to achieve the above functions.)