Mesa 5i20 - 7i37TA - 7i48

I'm totally new to LinuxCNC. I'm working on a retrofit of a Tree Journeyman 320 vertical mill with Mesa boards and AMC drives.

I've done a bunch of wiring and I finally turned the computer on yesterday. I'm working on getting the relay outputs straightened out before I jump into getting the drives going. Here is my wiring diagram:

I generated my hal file with PnCConf. Wire 231 is connected to OUT7+ and wire 500 is connected to OUT7- on the 7i37. Here is part of the hal file.

# --- MACHINE-IS-ENABLED ---
setp hm2_5i20.0.gpio.047.is_output true
net machine-is-enabled hm2_5i20.0.gpio.047.out

I'm getting logic opposite to what I want. I open LinuxCNC. When OFF is displayed in lower left I can push the start button and the relay will energize. When ON is displayed I push start and nothing happens. I looked in HAL CONFIG and the machine-is-enabled signal is doing what I expect (TRUE when ON and FALSE when OFF).

Thanks.

7I37TA inputs and outputs are inverted so for the outputs you would need for example:
setp hm2_5i20.0.gpio.047.invert_output true
for inputs you use the in_not pins

I opened the hal file. Changed to this:
MACHINE-IS-ENABLED ---
setp hm2_5i20.0.gpio.047.invert_output true
net machine-is-enabled hm2_5i20.0.gpio.047.out

Now I can't get relay to energize in ON or OFF.

Also for inputs would I use something like this:
# --- HOME-X ---
net home-x <= hm2_5i20.0.gpio.025.in_not

Thanks.

ok i get the inputs. why isnt this working for me:

MACHINE-IS-ENABLED ---
setp hm2_5i20.0.gpio.047.invert_output true
net machine-is-enabled hm2_5i20.0.gpio.047.out

"I opened the hal file. Changed to this:
MACHINE-IS-ENABLED ---
setp hm2_5i20.0.gpio.047.invert_output true
net machine-is-enabled hm2_5i20.0.gpio.047.out"

Note that you need both:

setp hm2_5i20.0.gpio.047.is_output true
setp hm2_5i20.0.gpio.047.invert_output true

in case that was not clear

BigJohnT wrote:

And have you read this basic hal info ?

John

Yes., but I need to read it several times and actually do it to understand it.

PCW wrote:

"I opened the hal file. Changed to this:
MACHINE-IS-ENABLED ---
setp hm2_5i20.0.gpio.047.invert_output true
net machine-is-enabled hm2_5i20.0.gpio.047.out"

Note that you need both:

setp hm2_5i20.0.gpio.047.is_output true
setp hm2_5i20.0.gpio.047.invert_output true

in case that was not clear

Ah ha!

Obviously you figured out how to do this by hand but for others info:

In PNCconf there is a check button beside the signal pin type combo box, it is an invert checkbox.
Checking it will add the proper HAL code to invert the signal.