利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN105721294A 一种兼容多通信协议PLC的智能网关 无效 - 驳回

一种兼容多通信协议PLC的智能网关
摘要：
本申请提供了一种兼容多通信协议PLC的智能网关，涉及通讯设备技术领域，该设备包括下行通讯接口模块、上行通讯接口模块、接口选择模块和主控模块，上行通讯接口模块和下行通讯接口模块均与接口选择模块相连，上行通讯接口模块将上位机或以太网的上行信号传送到接口选择模块，且，下行通讯接口模块将PLC或并行设备的下行信号传送到接口选择模块，接口选择模块与主控模块相连，接口选择模块将上行信号和下行信号转发给主控模块，主控模块通过设置DMA的工作模式，自动调用封装在主控芯片中的通信协议，从而解决了不同型号的PLC测控终端设备的网络连接问题。
摘要（英）：

The present invention provides an intelligent gateway compatible with a multi-communication protocol programmable logic controller (PLC), relating to the technical field of communication devices. The device comprises a downlink communication interface module, an uplink communication interface module, an interface selection module and a master control module. The downlink communication interface module and the uplink communication interface module are each connected with the interface selection module. The uplink communication interface module transmits an uplink signal of an upper computer or an Ethernet to the interface selection module, and the downlink communication interface module transmits a downlink signal of the PLC or a parallel device to the interface selection module. The interface selection module is connected with the master control module. The interface selection module forwards the uplink signal and the downlink signal to the master control module. The master control module sets a working mode of a DMA so as to automatically invoke a communication protocol encapsulated in a master control chip, so that a network connection problem of different modes of PLC measurement and control terminal devices is solved.

0/0