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rs 485 wire

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  • How many wires are in an RS485 cable?

  • Ideal RS485 Wiring. Ideally an RS485 system consists of a single linear cable (no branches) with 120 ohm resistors connected across the 2 wires at each end of the cable. RS485 can handle speeds of over 10 Mbits per second and line lengths of over 1 km.

  • What type of connector is used to implement RS485 protocol?

  • There is no specific type of connector used to implement the RS485 protocol but in most scenarios, a DB9 connector or terminal block are employed. Specific RS485 connectors may have different pinouts. You will be able to determine the actual configuration based on the documentation that accompanied the device.

  • What is the difference between RS485 and RS422?

  • The RS485 (EIA485) interface has proved to be extremely robust and is the most popular communication protocol used in industry due to its multi-point topology. The RS422 protocol has similarities with RS485 in that both conduct data transmission using differential signals. There are two types of RS485:

  • What is the RS485 pin configuration for DB 25?

  • RS485 pin configuration for DB 25 Figure 3 is an RS485 wiring diagram for RS485 pinout DB9 connectors. Figure 4 is a pin diagram for both 25 pin RS485 pinout half duplex and full duplex pinout connectors. The TxD+ and TxD- lines carry transmit data while the RxD+ and RxD- contain the receive data.

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