RuggedCom RS400 manual Serial Protocols Operation, RTU Polling

Serial Protocols

2.2 Serial Protocols Operation

2.2.1Serial Encapsulation Applications 2.2.1.1 Character Encapsulation (Raw Socket)

Character encapsulation is used any time a stream of characters must be reliably transported across a network.

The character streams can be created by any type of device. The baud rates supported at either server need not be the same. If configured, the server will obey XON/XOFF flow control from the end devices.

Figure 30: Character Encapsulation

2.2.1.2 RTU Polling

The following applies to a variety of RTU protocols including Modbus ASCII and DNP.

Note: Users of protocols supported by Ruggedcom devices are advised to use applications for used protocols.

The host equipment may connect to a RuggedServer™ via a serial port, may use a port redirection package or may connect natively to the network.

Figure 31: RTU Polling

RS400 55 ROS™ v3.5