Issue 7i92 and Arduino Relay

 

Hi dudes !i have a 7i92 .. on the gpio i have the IN from a relsy board.VCC 5V and GND are connected.GND is from 5V Powersupply and GND ftom the ID26 from the 7i92.Relay has a optocoupler.another relay has many jumper settings. i try both options no successhcan someone bring me back to the right route..? please 

Is the same power supply powering Mesa and relays?

yes same powersupply same GND and GND from the IDC parallel.


the relays work when i power them and put GND to the IN pin.

How are you testing them?

Is the 7I92 GPIO pin driving the relay set to output mode? 

good question!

#*******************
# SPINDLE
#*******************


# ---setup spindle control signals---

net spindle-vel-cmd-rps <= spindle.0.speed-out-rps
net spindle-vel-cmd-rps-abs <= spindle.0.speed-out-rps-abs
net spindle-vel-cmd-rpm <= spindle.0.speed-out
net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs
net spindle-enable <= spindle.0.on
net spindle-cw <= spindle.0.forward
net spindle-ccw <= spindle.0.reverse
#net spindle-brake <= spindle.0.brake
net spindle-revs => spindle.0.revs
net spindle-at-speed => spindle.0.at-speed
net spindle-vel-fb-rps => spindle.0.speed-in
net spindle-index-enable <=> spindle.0.index-enable

net spindle-cw => [HMOT](CARD0).gpio.028.out
net spindle-ccw => [HMOT](CARD0).gpio.029.out
net spindle-enable => [HMOT](CARD0).pwmgen.00.enable
net spindle-vel-cmd-rpm => [HMOT](CARD0).pwmgen.00.value

setp [HMOT](CARD0).pwmgen.00.scale [SPINDLE_0]MAX_OUTPUT

# ---Setup spindle at speed signals---

net spindle-at-speed <= [HMOT](CARD0).gpio.017.in_not



This is all about it.

BUT the relay works with GND to the IN Pin.

I try to change over cross the Optocoupler pins.
then 5v should activate the Optocoupler.

on a other machine i have a different relay.. this works but need a 220ohm resistor between gpio and gnd to dont activate the relay when linuxcnc is closed..

i read this in the forum anywhere and it works for me.. think when linuxcnc is closed the busdrivers all send high to every gpio. or i am wrong??

thanks

For a 7I92 (not 7I92T) you want the relay to be ground activated
as the 7I92 GPIO has pullups so will be high when LinuxCNC is not
running.

No 7I92 GPIO output will work until set into output mode, in addition
if the output is active low, you will likely want to invert the output
so a high hal signal activates the output. Something like:

setp [HMOT](CARD0).gpio.028.is_output  true
setp [HMOT](CARD0).gpio.029.is_output  true
setp [HMOT](CARD0).gpio.028.invert_output  true
setp [HMOT](CARD0).gpio.029.invert_output  true


 

I try to cross the Optocoupler and reverse the led..

i have a 7i92t

i saw i my other config that i done it how you said!

its a 7i92
now i have another machine with a 7i92t!

i check before solder action

If you have a 7I92T, you can change the GPIO resistors to be pullups or pulldowns
so for active high devices, you should select the pulldown option.