Data Sheet

ROBOT . HEAD to TOE

Product User’s Manual – MDS40B



8.3 SERIAL SIMPLIFIED MODE

In Simplified Serial mode, Enhanced SmartDrive40 is controlled by using the UART

interface. Input 1 is the UART Rx pin and Input 2 is the Slave Select pin.

A single byte of data is all you need to control the speed and direction of the motor. Sending

byte 127(decimal) 0r 0b01111111(binary) stops the motor, 0 is full reverse and 255 (decimal)

is full forward.

Simplified Serial mode is selected by setting SW1, SW2 to 1 (Up) and SW3 to 0 (Down).

SW4 – SW6 are used to select the UART baud rate.

Input Mode

SW1 - SW3

110

Simplified Serial Mode

UART Baud Rate

SW4 - SW6

000

001

010

011

100

101

110

111

Baud Rate

1200

2400

4800

9600

19200

38400

57600

115200

0 - OFF 1 - ON X - Don’t Care