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    • 1. 发明专利
    • Automatic control system equipped with network gateway, and its operating method
    • 具有网络网关的自动控制系统及其操作方法
    • JP2009088798A
    • 2009-04-23
    • JP2007253709
    • 2007-09-28
    • Delta Electronics Incデルタ エレクトロニックス,インコーポレイテッド
    • OYO JINGAKU
    • H04L12/70
    • PROBLEM TO BE SOLVED: To provide an automatic control system equipped with a network gateway and its operating method, in order to improve the data access efficiency. SOLUTION: The automatic control system includes a host, a network gateway operable to be connected to the host, and a plurality of programmable logical control units (PLC) operable to be connected to the network gateway. The network gateway includes a control device and a register. The control device backs up data from a specific address of the PLCs to the register one by one for each predetermined period. The control device receives an access instruction from the host. When the access instruction specifies a specific address, the control device corresponds to the specified address and transmits data already memorized at the register to the host. Since some of data of the PLCs are taken out by the network gateway, the access efficiency can be improved. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种配备网络网关的自动控制系统及其操作方法,以提高数据访问效率。 解决方案:自动控制系统包括主机,可操作以连接到主机的网络网关和可操作以连接到网络网关的多个可编程逻辑控制单元(PLC)。 网络网关包括控制设备和寄存器。 控制装置在每个预定周期将数据从PLC的特定地址逐个备份到寄存器。 控制装置从主机接收访问指令。 当访问指令指定特定地址时,控制设备对应于指定的地址,并将已经存储在寄存器中的数据发送到主机。 由于网络网关取出了一些PLC的数据,可以提高访问效率。 版权所有(C)2009,JPO&INPIT