Graeme

Hi, what is the value in the positioning status word KK315?

By Homing, He means is the axis referenced, see bit 30 of the status word. If not, this must be performed first.

You should not be worrying about OFF1, 2, 3 once the drive is setup in MDI mode (Clearly, they have an effect, but they should have already been set)

Sounds like Your operating mode is correctly set (i.e. Mode=3 and echoed back)

By the way, 0x47E FIRST, followed by 0x47F is a positive edge trigger on bit 0.

It is the STA bit in the positioning control bits that begins the traverse/MDI move

Regards,

Graeme

 Dear Graeme 

I am not at the site now but I remember that bit 30 ( axis referenced) of the status word  kk315 value is 0

Do you mean It should be 1 before transmit STA bit?

Regards