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    • 38. 发明专利
    • Terminal communication device and distributed control system
    • 终端通信设备和分布式控制系统
    • JP2014023021A
    • 2014-02-03
    • JP2012161346
    • 2012-07-20
    • Hitachi High-Tech Instruments Co Ltd株式会社日立ハイテクインスツルメンツ
    • SAEGUSA TAKASHITAKEMURA IKUOKAMASUKA HIDEYUKIKOYAMA MASAHIROFUNATSU TERUNOBU
    • H04L12/44
    • H04L67/1095G05B15/02G05B19/4148G05B2219/34406G05B2219/34413
    • PROBLEM TO BE SOLVED: To allow a control object device to get synchronized without examining a communication delay time in advance.SOLUTION: A terminal communication device is characterized by including a terminal communication control unit 110 which can switch an instant communication control unit 112 which, when a packet is received as one-bit by one-bit serial data, transmits the serial data to another terminal communication device 1 bit by bit sequentially and a normal communication control unit 111 which, when one-bit by one-bit serial data is received, stores the serial data until the serial data becomes the packet length, and then performs processing to the packet, performs processing by the instant communication control unit 112 if the terminal communication device received a clock time adjustment packet including clock time adjustment data giving notice of synchronization timing at the other terminal communication device 1, and performs processing by the normal communication control unit 111 if it received a packet other than the clock time adjustment packet.
    • 要解决的问题:允许控制对象设备预先同步而不检查通信延迟时间。解决方案:终端通信设备的特征在于包括:终端通信控制单元110,其可切换即时通信控制单元112, 当分组以1比特1比特串行数据的形式被接收时,将串行数据顺序地发送到另一个终端通信设备1,以及通常的通信控制单元111,当一比特比特的串行数据是 接收,存储串行数据,直到串行数据成为分组长度,然后对分组执行处理,如果终端通信设备接收到包括提供通知的时间时间调整数据的时钟时间调整分组,则由即时通信控制单元112执行处理 在其他终端通信设备1处的同步定时,并且通过正常通信c进行处理 控制单元111,如果其接收到除时钟时间调整分组之外的分组。