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。
The remote monitoring system communicates through the wireless technique, and USES PLC as the followers, it has the advantage of security, economy and higher automatization level.
此远程监控系统采用无线通信，现场使用plc做下位机，具有安全、经济、自动化水平高的优点。
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