Converter USB-RS232/RS485/UARTTTL

The device is a 3 in 1 universal converter. It can be used as RS232, RS485 or UART TTL converter. USB RS232 485 UART TTL is based on chip FT232RL, it has normal COM port made with two serial converters MAX232 and converter 485 made with chip MAX485. Connection parameters can be set on an operating system at speed: from 110 to 921600bps.

It is applicable for communication with different microcontrollers such as PIC, Atmel and other with TTL serial connection. For connecting devices with RS232 or industrial RS485 interface through computer USB port.

Specifications:

Communication interface: RS232, RS485 and UART TTL
Connecting RS232 via DB9 Male Connector
Serial Speed: from 110 up to 921600bps
Supply Voltage DC 5V (USB)
LED indication for PWR supply voltage
LED indication for RX, TX receiving and transmission
PCB Size: 57 х 35mm
Description:

- socket X1

USB Cable Type A to a computer
- socket X2

RS232 Female Cable
- pin header X3

VCC – Output 5V DC
TX – UART output
RX – UART input
GND – Ground 0V
B – RS485 signal line B
A – RS485 signal line A
- pin header X4

Jumper for terminating resistor switch on 120Ω
Signalling:

- red LED D3 (PWR) – power supply is on

- yellow LED D1 (RX) – turns on when receiving data

- green LED D2 (TX) – turns on when sending data

Setting a working mode (from MProg programme):

- USB to RS232, UART

C3 = “I/O”
- USB to RS485

C3 = “TXDEN”
Loading settings via Mprog:

- Menu File>Open

RS23 and UART – „USB to RS232 UART.ept“
RS485 – “USB to RS485.ept”

Note:

- Once settings’ loading is completed, the device needs to be plugged out of the computer USB port for about 5 seconds

- Device’s factory default settings are:

USB to RS232 and UART TTL