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. In the case where a TCP connection is established but no data is received, following the assessment in 1), if the TCP channel is established but no data is received, further investigation is necessary. 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, rs485 cable Ethernet or WIFI with your PC and start the Brick Viewer software. All the other Master Bricks with RS485 Extension must not have a USB, Ethernet or WIFI connection (they can use a USB Power Supply). The Master Brick of each stack has to be the lowermost Brick (except if you are using a Power Supply).

Confirm hardware connections including serial port devices, and check if your gateway and energy meter are correctly connected. To set up communications for your meter or counter, see the Serial Communications section of its user manual. Therefore for RS485 communications no crossover cable is used. On some PLC models it is possible to mix RS232 and RS485 communications. Even RS485 is not commonly as popular as RS232 it is extremely useful for converters in industrial and commercial environments. 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 - RS485 converter is often used in industrial data acquisition and control applications where multiple serial devices communicate with each other through a converter. 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. For example you need to consider the noise level in the environment surrounding the serial converter. If there is a lot of environmental electrical noise then an optical isolated converter is preferred.

This provides high noise immunity and allows distances up to 4,000 ft (1200 meters). A symmetrical pin-layout allows two DTEs, data terminal equipment, to be connected directly without use of a modem or other DCE, data communication equipment. If the serial port terminal device receives data but does not respond properly, monitor the data from the serial port device. Question:I can't connect to the device at address 192.168.0.7 to change the address and connect to my network. 2. Configure the IP of your RS485 and your computer to the same network address but different node address IP. You should see the Master Brick view with the identified RS485 Extension (see images below). The Master Brick has to be restarted to apply the new configuration. At the end, press "Save RS485 Configuration" to save the configuration permanently on the RS485 Extension. For master configuration choose "Master" as type and input the addresses of the slaves in the RS485 bus as a comma separated list. If you want to use a stack with RS485 Extension in your existing Modbus network, you have to match the values with the other bus participants. It does not support Modbus transmission.

Question:Does RS485 TO ETH support Modbus transmission? Another thing I've done is connecting the slave device to to the SENA RS485 adapter, and use the metal piece on the pins, the middle pin of the adapter, when touching the metal, makes the TX led turn on. If pingable, it indicates the device is not dead. How come reading data from the RS485 adapter never succeeds? 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. I inserted a metal piece in the middle pin of the cable (the TX) and I could see garbage data showing on the screen (sometimes!). You should now be able to see all connected stacks in the Brick Viewer. If you need technical support or have any feedback/review, please click the Submit Now button to submit a ticket, Our support team will check and reply to you within 1 to 2 working days.