Now I´ve unplugged both limit switches and if i send the command ? in console, I will get the following message:
?
<Idle|MPos:3.000,3.000,0.000|Bf:35,7679|FS:0,0|Pn:PXY|CL:0,100|PS:2,1|ER:0,0>
ok
This means that i always have a signal from the limit switches, even though they are not connected at all.