The controlling and communication between the PLC and the remote I/O modules are used by the CAN bus, the distance can be several hundred meters.
PLC和远程I/O模块之间的控制和通信通过CAN总线来实现，其通信距离可以达到几百米。
At present, remote PLC Virtual control system based on industry configuration software still has not concrete application in teaching.
目前基于工业组态软件的远程PLC虚拟控制系统在教学上尚无具体的应用。
Using the PLC module made by Simons as a control core, S7-200 made by Simons is designed in remote gate control system, the draft of its composing and its system software program are put forward.
利用西门子公司的PLC模块作为控制核心，对西门子S7-200在远程闸门控制系统中的应用进行了设计。给出了闸门控制系统硬件构成和系统软件编程框图。
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