7i96 step + or -, + other question

Did you run halcmd show all?
There is no need to guess at pin names

PCW wrote:

Did you run halcmd show all?
There is no need to guess at pin names

i did show pin.

ill try it

show pin should show the spindle pin names

Note that these names have changed recently to allow multiple spindles
so depending on the exact LinuxCNC version you have, the spindle
control pins exported by LinuxCNCs motion component may differ

this looks like it

19 bit OUT FALSE spindle.0.forward

after i did halcmd: show pin spindle.0.

and i got all the spindle params

i also cheated a little bit
and found the signal link from a pnconf i played with
after combining them i think its working.

the led illuminated when i hit cw

net spindle-cw <= spindle.0.forward
net spindle-cw => hm2_7i96.0.ssr.00.out-00

so you have to send the signal to the pin then the pin to the output ?

Basically you connect output pins to one or more input pins with a signal

net some_net_name some_output_pin some_input_pin1 some_input_pin2

which is identical to

net some_net_name some_output_pin
net some_net_name some_input_pin1
net some_net_name some_input_pin2

I think of net names as being like wires (with arbitrary names) so the above connections
could be done with a different signal name

net blue_wire some_output_pin
net blue_wire some_input_pin1
net blue_wire some_input_pin2

the => and <= are just for human readability

Thank you.

I played with the Hal command some more and set the coolant up.

Is it safe to close this relay with the outputs or should I use a smaller 5v relay to close this one?

www.mscdirect.com/product/details/54045950

You can drive much larger relays/contactors/solenoid valves with the 7I96 outputs,
since they can switch 2 Amps, but you _must_ include a flyback diode across the
relay coil.

The flyback diode is installed with the cathode (band end) to + side of the relay coil

Check that the flyback diode is connected correctly by powering the relay
directly from your power supply (a reversed diode will cause a short and is
likely to damage the 7I96 output)

PCW wrote:

You can drive much larger relays/contactors/solenoid valves with the 7I96 outputs,
since they can switch 2 Amps, but you _must_ include a flyback diode across the
relay coil.

The flyback diode is installed with the cathode (band end) to + side of the relay coil

Check that the flyback diode is connected correctly by powering the relay
directly from your power supply (a reversed diode will cause a short and is
likely to damage the 7I96 output)

Ok thanks.