Run 2 step motors simultaneously using FM562

Hello,

I am working on a project and I am trying to run 2 step motor at the same time. They both should work simultaneously and their number of steps should be equal. But my problem is, when I run them, one of them is always ahead and always a few steps become missing for one step motor.

My question is, I am using FM562 card and can I connect 1 output to 2 drive? By this way I want to run them simultaneously and in equal steps. Or is there any different option?

Thanks..