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目 录

1 联网设备介绍........................................................................................................................................................................1 1.1 控制器联网通讯卡......................................................................................................................................................1

1.1.1 NNET-1型CRT接口卡..................................................................................................................................1 1.1.2 INET-04型RS485环形联网接口卡 ......................................................................................................2 1.1.3 INET-02型RS485星型联网接口卡 ......................................................................................................3

1.2 控制器联网转换接口.................................................................................................................................................4

1.2.1 RS485总线光纤转换模块 .............................................................................................................................4 1.2.2 RS232总线光纤转换模块 .............................................................................................................................4 1.2.3 RS-232/RS-485接口转换器 .....................................................................................................................5

1.3 控制器星型联网设备.................................................................................................................................................6

1.3.1 RS485星型集中器 ...............................................................................................................................................6 1.3.2 RS485总线光纤Hub ...........................................................................................................................................7

1.4 TCP/IP联网套件.......................................................................................................................................................8 2 联网方案介绍........................................................................................................................................................................8 2.1 环形/总线型联网方案 ..............................................................................................................................................8 2.2 星型联网方案..............................................................................................................................................................10 2.3 混合型联网方案：....................................................................................................................................................11 2.4 双机备份联网方案：...............................................................................................................................................15 3 典型设计案例......................................................................................................................................................................17 3.1 机场线火灾报警控制器联网系统设计 ............................................................................................................17