This is a common mistake. One of your axes - most likely the Y axis - is backwards.
Where is the printbed when you home the Y axis to Y=0? If your answer is that it's all the way forward, then it is backwards. Y=0 is when the printbed is all the way to the back. The print head - which is what should be your reference point - will be at the front.
You either have to set up your firmware to home to the max (y=200) or you have to invert your Y axis and move the position of the end stop to the rear. Axis inversion and end stop reconfiguration can be set in the firmware.
