主要针对在DCS通讯网络中常见的令牌网、以太网和FDDI网从理论上进行了一些讨论，并结合工业控制的要求分析了各自的优缺点。
It discussed theoretically about the token ring, Ethernet and FDDI, which is normally used in DCS communication network, and analyzed its merit and defects in regard of industrial control requirement.
通信接口：令牌环网或以太网适配器。
高带宽与100%的通道可用性相结合将使在令牌环网环境中处理这些类型的应用得以可行。
The combination of high bandwidth and 100% channel availability will make it feasible to handle these types of applications in a token-ring environment.
答：去银行办理网银，柜员常常会给您一个带数字屏幕的小牌子，这就是动态令牌设备。
Answer: go to the bank for Internet banking, the teller will often give you a small digital screen brand, which is the dynamic token device.
该协议基于现有的以太网硬件基础，在应用层构造虚拟令牌，利用令牌控制来解决网络的访问冲突问题。
This protocol is based on current hardware foundation of Ethernet and solves access conflict through token-control by creating virtual token on application layer.
由于每个离散通道是单向的，并且定时令牌方案避免各设备间同时交谈，因此不会出现以太网中的碰撞情况。
Because every discrete path is unidirectional and the Timed Token scheme keeps devices from talking at the same time, collisions don't occur as they do in Ethernet.
分块常常发生在传输媒介混合在一起的环境中，比如兼有以太网和令牌环网的网络。
Fragmentation often occurs in environments that have a mix of media such as Ethernet and Token Ring.
RETHER是一种基于以太网的定时令牌总线协议，能够对数据传输提供实时性能。
RETHER is a timed-token-passing bus protocol based on Ethernet. It provides the real-time transfer performance.
你一点也不用怕，IEEE 802.5委员会已经找到大幅度提升性能同时保持与现有已安装的令牌环网群体相兼容的方法。
Never fear, the IEEE 802.5 committee already found a way to deliver a substantial performance increase while maintaining compatibility with the installed base.
你一点也不用怕，IEEE 802.5委员会已经找到大幅度提升性能同时保持与现有已安装的令牌环网群体相兼容的方法。
Never fear, the IEEE 802.5 committee already found a way to deliver a substantial performance increase while maintaining compatibility with the installed base.
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