RPI是為服務器上的特定數據段指定的更新速率
網絡將模塊添加到控制器的I/O配置時，
必須輸入RPI作為參數。此值指定執(zhí)行的頻率
生成該模塊的數據。例如，如果指定的RPI為
50ms，這意味著每隔50ms，I/O模塊應將其數據發(fā)送到
控制器或控制器應將其數據發(fā)送到I/O模塊。
為ControlNet運行RSNetWorx時，實際的數據包間隔（API）
將進行計算。API將等于或快于RPI。
RPI僅用于生成數據的模塊。例如，當地的CNB
模塊不需要RPI，因為它不是數據生成成員
系統(tǒng)的功能；它僅用作連接遠程機架的橋梁。
重要提示：不能將RPI設置為比螺母快的速率。這個
網絡無法以比NUT更快的速度發(fā)送數據。The RPI is the update rate specified for a particular piece of data on the network. When you add a module to the I/O configuration of a controller, you must enter the RPI as a parameter. This value specifies how often to produce the data for that module. For example, if you specify an RPI of 50ms, it means that every 50ms the I/O module should send its data to the controller or that the controller should send its data to the I/O module. When you run RSNetWorx for ControlNet an Actual Packet Interval (API) will be calculated. The API will be equal to or faster than the RPI. RPIs are only used for modules that produce data. For example a local CNB module does not require an RPI because it is not a data-producing member of the system; it is used only as a bridge to remote racks. Important:You cannot set the RPI to a rate faster than the NUT. The network cannot send data at a rate that is faster than NUT.