Click Blocker Tracking
The cookie settings on this website are adjusted to allow all cookies so that you have the very best experience. If you continue without changing your cookie settings, we'll assume that you are happy to receive all cookies on our website. However, if you would like to, you can change your settings at any time using the Change cookie settings link in the account menu. 
    
 

RS485 3 Click Board

RS485 3 Click Board

SKU: MIKROE-2821

In Stock 1 in stock
Lead Time (if not in stock) 3 working days
Our Price: $19.41
Quantity

The RS485 3 Click Board uses SN65HVD31DR from Texas Instruments, a tri-state differential line driver and differential input line receiver. The click is intended to be used as UART to RS-422/RS-485 communication interface. It is suited for transmitting smaller blocks of data over long distances, using the four-wire bus, allowing for full-duplex communication.

It can be used as a transceiver between UART interface and RS-422/RS-485 communication bus. RS485 3 click can be used for controlling various building automation systems, light controllers, sensors and many small embedded devices that can all share the same bus, which can stretch up to 254 nodes and up to 1200m in length.

Product Details


Manufacturer Mikroelektronika d.o.o.
Warranty 12 months

The RS485 3 Click Board uses SN65HVD31DR from Texas Instruments, a tri-state differential line driver and differential input line receiver. The click is intended to be used as UART to RS422/RS485 communication interface. It is suited for transmitting smaller blocks of data over long distances, using the four-wire bus, allowing for full-duplex communication.

It can be used as a transceiver between UART interface and RS422/RS485 communication bus. RS485 3 click can be used for controlling various building automation systems, light controllers, sensors and many small embedded devices that can all share the same bus, which can stretch up to 254 nodes and up to 1200m in length.

How Does it Work?

The main feature of the RS-422/RS-485 interface is that the signals can be transmitted and received at distances up to 1200m by using the so-called twisted pairs - basically, the signal and its inverted copy are sent via the twisted pair wires. Because of the length of the twisted pair, it will unavoidably be exposed to the influence of the EMI. The interference will appear in both wires of the twisted pair equally, but thanks to the opposite polarity of the signals the wires are carrying, the interference will get cancelled at the differential inputs of the SN65HVD31. This way, greater signal communication distances can be achieved than with the regular UART.

RS-422/RS-485 only specifies electrical characteristics of the transmitter and the receiver. It does not specify or recommend any communications protocol, only the physical layer. The top layer communication protocol of choice can be used, such as the MODBUS or DMX protocols.

To improve the signal stability, RS485 3 Click Board is equipped with the TVS – transient voltage suppression diodes used to protect the circuit from the static electricity discharges and other types of dangerous electrical discharges, that might occur.

There are four on-board screw terminals (RX+, Rx-, Tx+, Tx-) for connecting RS-422/RS-485 twisted pair cable, along with two screw terminals (GND) for a common ground connection.

RS485 3 Click Board

TX and RX pins should be used for connecting MCU UART interface. Two resistors (R2 and R5) should be unsoldered if using more than two clicks on the RS-422/RS-485 bus.

  • RS485 3 Click Board (1)
There have been no reviews
Only those who bought this product are allowed to add review
If you've already bought this product, please sign in and add your own review!

RS485 Click Board 5V

MIKROE-925

$17.47

RS485 Click Board 3.3V

MIKROE-989

$17.47

RS485 2 Click Board

MIKROE-2700

$17.47

RS485 Isolator Click Board

MIKROE-2673

$47.54

RS-485 Interface Board

MIKROE-66

$25.60


Share