just 1 axis

If I read this correctly you have a relay tied to your drive inhibit input. If that relay is wired to inhibit the drive until the relay is on then use axis enable to pull in that relay via a gpio output. This way the drive will come alive only when EMC is ready to control the drive.

John

Well, you could wire through the normally closed contact on the relay to the inhibit pin on your drive. This way when the drive power is on the drive it is inhibited.

Use an output from EMC to turn on the relay with drive enable bit.

The hal line might look like this:

net enable-x axis.0.amp-enable-out => hm2_5i23.0.gpio. some pin number

Also you have to tell hostmot2 that you want to use a pin as an output.

www.linuxcnc.org/docview/html/hal_basic_hal.html

www.linuxcnc.org/docview/html/drivers_hostmot2.html#r1_12

John