Even better is Ethernet cable, because it is twisted and often shielded. This allows either twisted pair cables to be used with terminal blocks, or Ethernet Cat5e or Cat6e cable to be used with RJ45 jacks. All the other Master Bricks with RS485 Extension must not have a USB, rs485 cable Ethernet or WIFI connection (they can use a USB Power Supply). The RJ11 socket is interesting, because the manufacturer choose to have a symmetrical pin-layout, just as with the MMJ connector on DECconnect systems and the RJ45 jack in the Yost standard. Either a 4 position terminal block (5mm pitch) or RJ45 connectors can be fitted for the RS-485 connectors. The RS485 interface can use RJ45 jacks for CAT-5 cable or a terminal block. To connect an RS485 device or RS485 network to any PC or controller, the PC or the controller should provide RS485 interface also. Test options include: audio, video, ping, TDR, PoE, IP network connections, and LAN (local area network) cable connections. Ensure SSCOM is added to the firewall, otherwise the firewall may block TCP connections, or test by temporarily disabling all firewalls on the computer. However the other standards that have been introduced more recently provide higher levels of performance that are very useful in may applications.

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. 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. If handshaking is not necessary, an ordinary 4 wire telephone cable could be used, provided that the pins are cross-connected as shown in the picture below. I am beginning to suspect that the board is not writing to the RS485 adapter correctly, or that pins are not mapped correctly. The PCB-CB485 is a bare PCB to build the CB485 logic-level to RS-485 adapter. If your PC or controller only has RS232 port then you need an RS232 to RS485 converter or adapter for your PC or controller. 5V power, ground, and the 8 port bits. A DIL16-to-DIP16 ribbon cable can be used to carry the signals, power, and ground to a breadboard. The cable to be used is a shielded twisted pair (telephone type). This was developed in 1962 when the need for forms of transmitting data from modems attached telephone lines to remote communications equipments became apparent.

Serial data transmission links used cables with a variety of different functions to enable data to be sent reliably between two equipments. Although a number of different wires were often used within a cable, they did not require nearly as many as the systems that sent parallel data. The RS485 chip converts CMOS level transmit (Tx) and receive (Rx) lines to differential RS485 voltages than can be sent over long distances. 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. When in full RS232 mode, the six available pins are assigned to the most used RS232 signals. When the DSR and DTR signals are not used, the two pins can be used for simultaneous RS485 communication. There are 6 uncommitted lines on the headers if you want to add additional signals to the ribbon cable.

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. Confirm hardware connections including serial port devices, and check if your gateway and energy meter are correctly connected. RS232/485 TO ETH, check whether the RS232/RS485 wiring is correct or not. 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. However since only a true RS485 network can have addressable serial RS485 devices, the RS232 converter needs to be addressable either by software or by DIP switches when using it in this type of configuration. The host software should attempt to connect to the device's IP and port to verify normal connectivity.