Stepper Motor Control Problem?

In the below link the one stepper motor was controlled …Can I control multiple stepper motor drivers from one controller???

Probably, but the number of stepper motors you can control will have limits. You might be limited by number of outputs on the board, but the more likely hardware limit will be number of timers available (and other code might also need timers for clocks, delays, etc.). The code you use might also limit how many stepper motors you can control (i.e. poorly written code might hard-code the control pins used, so only one motor can be controlled).