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Setup is the same when multiple meters are interconnected via cables CBL03, except that all meters now need to be set to a different digital address via their front panel. The serial RS232 to RS485 converter and RS232 to RS422 converter units, also called serial converters, are small electronic devices used to convert a serial RS232 signal, (for example the COM port in older computers) into either RS485 or RS422 signals. RS485 is simpler because it uses only two wire (or a single pair) to carry out the data in bidirectional manner, using RS232, we need 3 wires at minimum to carry the data bidirectionally. Due to loading limitations one of the best uses of a RS232 to RS422 serial converter might be in point-to-point communications, such as extending an existing RS232 line. The RS485 converter interface uses two wires for communication, one for transmitting and one for receiving data, which is referred to as a half-duplex communication converter.

The diagram below shows a basic RS485 cable for use with the RJ11 socket on Unitronics PLCs. What RJ11 cables should I use with RS485? RS485 master is the Master Brick which has a USB, Ethernet or WIFI connection to the PC running brickd. Connect the Master Brick via USB, Ethernet or WIFI with your PC and start the Brick Viewer software. You should see the Master Brick view with the identified RS485 Extension (see images below). To create a RS485 bus, stack the RS485 Extension on top of a Master Brick. Usually a RS232 - RS485 converter is the preferred way to establish multi-point networks when working with RS232 devices. In contrast to EIA-485 (which is multi-point instead of multi-drop), EIA-422/V.11 does not allow multiple drivers but only multiple receivers. The advantage of the RS485 protocol is that this it can transfer data over longer distances, up to 4000 feet, and have up to 32 nodes per single network, and it can be used for multi-point networks where multiple serial devices are setup in a bus network. The RS422 converter is used for data transmission, using balanced or differential signaling, it is mainly used in industrial and commercial environments since lots of process equipment and machinery have this protocol built-in.

A RS232 - RS422 converter is a 4-wire, full-duplex, differential protocol with multi-drop capabilities and a recommended distance limit of 4000ft. ANSI/TIA/EIA-422-B is the American national standard for the RS422 protocol. The probes communicate using the standard Modbus RTU protocol. Some of these converters can convert from RS232 to both RS485 and RS422 however many standard models only has one of the protocols. Question:Does RS485 TO ETH support Modbus transmission? In order to increase the extent of the Modbus network, repeaters can be used; and signal amplifying and regenerating devices provided with two communication ports that transfer to each what they receive from the other. So in order to transfer data from a RS232 serial interface engineers need a converter to be able to connect to a RS485 or RS422 interface. A RS232 - RS485 converter is often used in industrial data acquisition and control applications where multiple serial devices communicate with each other through a converter. If the serial port terminal device receives data but does not respond properly, monitor the data from the serial port device. Confirm serial port parameters such as baud rate, data bits, and stop bits: Baud rate should be configured according to the connected RS485 device, commonly used rates are 9600 and 115200; Refer to the device manual or contact RS485 device technical support for configuration, especially if set to Modbus mode, confirm if the function code matches.

2. Configure the IP of your RS485 and your computer to the same network address but different node address IP. Question:I can't connect to the device at address 192.168.0.7 to change the address and connect to my network. Now check it again with the 192.168.0.7 address. RS232/485 TO ETH, check whether the RS232/RS485 wiring is correct or not. Confirm hardware connections including serial port devices, and check if your gateway and energy meter are correctly connected. Laureate meters are modular with a middle slot reserved for a communication board, as illustrated in our Laureates Overview web page. I tried connecting it directly to the computer either with a normal network cable or with a crossover cable but the web page doesn't open. Use a 485 to USB serial cable, connect it to the interface of the 485 device and the computer's USB port, assign a COM port on the computer, open serial debugging assistant software, set the serial port parameters consistently, input the corresponding COM port, and monitor the data from the 485 device.