Two modes of communication, one is PPI master - slaveprotocol, one is free port protocol.
通讯方式主要有两种:PPI主从通讯、自由口模式通讯。
2
The 2-wire interface is a widely used Master, multi-slaveprotocol using a serial clock (SCL) and a serial data line (SDA).
此2线接口是一个广泛使用的主机、使用串行时钟(SCL)和串行数据线(SDA)的多从机 协议。
3
RS232 and PROFIBUS-DP protocol convert interface can embed in the process control equipment as Intelligent Slave Station, that realize many functions as data collect and control.