motor stepper

can u help me in how i can connect and test code the tb6600 driver (4.5A) to arduino to control stepper motor (NEMA 23)

Please post a link to the datasheet for your driver.

Some of them have connections marked (for example) step+ and step-. In that case connect all the - connections to Arduino GND and the + connections to suitable Arduino I/O pins.

...R
Stepper Motor Basics
Simple Stepper Code

it's a step and direction device.

Robin2's link to stepper motor basics talks about the A4988.
the programming would be the same.

pulse out to take a step

direction is high or low, goes forward or reverse.