本产品应用灵活，可以组成多种光纤网络。逻辑独立双总线电接口,可实现电接口的备份或者单设备接入双冗余总线系统;采用点对点的网络时可以实现通过光纤连接两Profibus DP总线的网段；采用双光口链形网络的光纤总线上实现多网段的Profibus DP总线连接（200个）；同时，本产品采用双光口实现双纤环网冗余功能，当某处光纤故障时，系统会在10ms内重建网络链路，保障系统的正常通信，实现对信号传输的自愈保护功能，网络故障排除后系统会自动恢复；该系列产品采用公司自行研发的专有环网协议Ci-ring，不需设置，不需要根节点，快速完成网络的成环和解环功能，该系列产品即插即用，不需配置，大程度的使用户安装和调试过程简单化。
6ES7645-3FB20-492361
This product is flexible in application and can form a variety of optical fiber networks. The logic independent dual bus electrical interface can realize the backup of the electrical interface or the single device can be connected to the dual redundant bus system; When point-to-point network is adopted, the network segment of two PROFIBUS DP buses can be connected through optical fiber; PROFIBUS DP bus connection of multiple network segments is realized on the optical fiber bus with double optical port chain network (200); At the same time, this product adopts double optical ports to realize the redundancy function of double fiber ring network. When an optical fiber fails, the system will rebuild the network link within 10ms to ensure the normal communication of the system and realize the self-healing protection function of signal transmission. After the network fault is eliminated, the system will automatically recover; This series of products adopts the proprietary ring network protocol CI ring developed by the company, which does not need to be set up or the root node, and quickly completes the looping and de looping functions of the network. This series of products is plug and play, does not need to be configured, and greatly simplifies the user's installation and debugging process.
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