Hard limit prot. Error

Hi everyone, I have purchased a used Chinese laser recently and it has had one of its limit switches removed. Probably removed because it was broken. So I purchased a new proximity switch and replaced it. Now when I home the machine it slides to the right and when it activates the switch it just stops and gives me the error, hard limit prot. It doesn’t home to the back right like it should. What am I doing wrong here? Please help.