英语翻译RS485 is a multi-drop network – i.e.many devices can com
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英语翻译
RS485 is a multi-drop network – i.e.many devices can communicate with each other over a single two wire cable connection.The RS485 cable requires to be terminated at each end of the cable.A link is provided to allow the cable to be terminated if the device is physically positioned at either end of the cable.
In this example the data transmitted by the FT232R is also received by the device that is transmitting.This is a common feature of RS485 and requires the application software to remove the transmitted data from the received data stream.With the FT232R it is possible to do this entirely in hardware – simply modify the schematic so that RXD of the FT232R is the logical OR of the SP481 receiver output with TXDEN using an HC32 or similar logic gate.
RS485 is a multi-drop network – i.e.many devices can communicate with each other over a single two wire cable connection.The RS485 cable requires to be terminated at each end of the cable.A link is provided to allow the cable to be terminated if the device is physically positioned at either end of the cable.
In this example the data transmitted by the FT232R is also received by the device that is transmitting.This is a common feature of RS485 and requires the application software to remove the transmitted data from the received data stream.With the FT232R it is possible to do this entirely in hardware – simply modify the schematic so that RXD of the FT232R is the logical OR of the SP481 receiver output with TXDEN using an HC32 or similar logic gate.
RS485属于多联网络,即许多设备可以利用双绞线实现互通.RS485只需要在每条线路终端汇接管理.只要现有线路终端部署有相关设备,则通过提供的连接器实现管理.
例如:FT232R发送的信息也可以通过发送的设备来接收.这仅为RS485的一项常见功能.它需要应用软件从所接收的信息流中删除所发送的信息.FT232R将通过硬件来完成整个工作---即只需要调整设定,FT232R的RXD就可成为SP481接收器逻辑上的OR,其输出可以利用HC32或者相同的逻辑网关,经TXDEN来实现.
例如:FT232R发送的信息也可以通过发送的设备来接收.这仅为RS485的一项常见功能.它需要应用软件从所接收的信息流中删除所发送的信息.FT232R将通过硬件来完成整个工作---即只需要调整设定,FT232R的RXD就可成为SP481接收器逻辑上的OR,其输出可以利用HC32或者相同的逻辑网关,经TXDEN来实现.
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