The invention relates to a method for communication in a communication network system from the end (2a-2c, 41), the communication from the end (2a-2c, 41) includes a control device (10); capacitive element (11b); (13) determining voltage time and measurement (14). The control device (10) controls communication with the main end (1). The capacitive element (11b) is coupled between the high potential side bus (3H) and the low potential side bus (3L). The voltage determining section (13) determines whether the voltage between the buses (VB) exceeds the threshold voltage (Vth). The time measuring unit (14) measures the time that the voltage (VB) exceeds the threshold voltage (Vth) by charging the capacitor (11b) from the bus to the voltage determining section (13) to determine the voltage (s). The control device (10) sets a ID value for communicating with the main end (1) based on the length of time measured by the time measurement unit (14).
【技术实现步骤摘要】
【技术保护点】
１．一种用于通信网络系统中的通信从端（２ａ－２ｃ，４１），在所述通信网络系统中主端（１）和多个所述通信从端（２ａ－２ｃ，４１）通过高电势侧总线（３Ｈ）和低电势侧总线（３Ｌ）以菊花链方式耦合，所述通信从端（２ａ－２ｃ，４１）包括：控制设备（１０），控制与所述主端（１）的通信；电容性元件（１１ｂ），耦合在所述高电势侧总线（３Ｈ）和所述低电势侧总线（３Ｌ）之间；电压确定部（１３），确定所述高电势侧总线（３Ｈ）与所述低电势侧总线（３Ｌ）之间的电压（ＶＢ）是否超出阈值电压（Ｖｔｈ）；以及时间测量部（１４），测量从所述电容性元件（１１ｂ）通过所述高电势侧总线（３Ｈ）和所述低电势侧总线（３Ｌ）开始充电到所述电压确定部（１３）确定所述电压（ＶＢ）超出所述阈值电压（Ｖｔｈ）时的时间，其中所述控制设备（１０）基于由所述时间测量部（１４）测量的时间长度来设置用于与所述主端（１）进行通信的ＩＤ值。
【技术特征摘要】
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