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Author Topic: No signal to laser pwm port  (Read 233 times)

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No signal to laser pwm port
« on: March 27, 2024, 10:40:44 PM »
I'm sure this will be a easy fix and I am over seeing the issue.
My setup coinsist of Win 11, Mach4 4809 build, ESS 285 with laser screen installed I'm Using a MB3 BOB.
All other profiles work fine but I have been unable to get laser profile to test fire laser.
The ESS pin config. I have port3 pin 14 named as laser PWM, Port3 pin 16 named as Laser Gate,
In Outputs I have Laser PWM mapped to P3-14, and output#16 mapped P3-16.
Laser tab the laser gate assigned to #16. Allow test fire is checked.
My first thought was a bad 24v ( LT-80W-AA-Pro ) Laser but after connecting the PWM to a 5v source on the MB3 the laser did come on.
Tested P3-14 with ohm meter and no volts while test firing in mach4. I tried changing the power in ESS laser tab from 15.1 to 75 % and still no voltage.
If anyone could offer suggestions it would be greatly appreciated.
Re: No signal to laser pwm port
« Reply #1 on: April 02, 2024, 12:53:38 AM »
I'm sure this will be a easy fix and I am over seeing the issue.
My setup coinsist of Win 11, Mach4 4809 build, ESS 285 with laser screen installed I'm Using a MB3 BOB.
All other profiles work fine but I have been unable to get laser profile to test fire laser.
The ESS pin config. I have port3 pin 14 named as laser PWM, Port3 pin 16 named as Laser Gate,
In Outputs I have Laser PWM mapped to P3-14, and output#16 mapped P3-16. Laser tab the laser gate assigned to #16. Allow test fire is checked.
My first thought was a bad 24v ( LT-80W-AA-Pro ) Laser but after connecting the PWM to a 5v source on the MB3 the laser did come on.
Tested P3-14 with ohm meter and no volts while test firing in mach4. I tried changing the power in ESS laser tab from 15.1 to 75 % and still no voltage.
If anyone could offer suggestions it would be greatly appreciated.

Have you checked Mach4's port assignment, output mode, and test output function?
Re: No signal to laser pwm port
« Reply #2 on: April 02, 2024, 09:25:19 AM »
Thanks Charlie, I will do so this afternoon.

GOOMBA

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Re: No signal to laser pwm port
« Reply #3 on: April 02, 2024, 12:02:48 PM »
You might have better luck on the WARP9 forums as they developed that profile and ecosystem you're asking questions about.
Re: No signal to laser pwm port
« Reply #4 on: April 02, 2024, 12:46:32 PM »
Thanks GOOMBA, I do have a post on there as well.
Re: No signal to laser pwm port
« Reply #5 on: April 02, 2024, 12:52:49 PM »
I'm sure this will be a easy fix and I am over seeing the issue.
My setup coinsist of Win 11, Mach4 4809 build, ESS 285 with laser screen installed I'm Using a MB3 BOB.
All other profiles work fine but I have been unable to get laser profile to test fire laser.
The ESS pin config. I have port3 pin 14 named as laser PWM, Port3 pin 16 named as Laser Gate,
In Outputs I have Laser PWM mapped to P3-14, and output#16 mapped P3-16. Laser tab the laser gate assigned to #16. Allow test fire is checked.
My first thought was a bad 24v ( LT-80W-AA-Pro ) Laser but after connecting the PWM to a 5v source on the MB3 the laser did come on.
Tested P3-14 with ohm meter and no volts while test firing in mach4. I tried changing the power in ESS laser tab from 15.1 to 75 % and still no voltage.
If anyone could offer suggestions it would be greatly appreciated.

Have you checked Mach4's port assignment, output mode, and test output function?

Hello Charlie, I did go into ESS Diagnostic and checked the output. When I test fire Laser, the Blue signal lights up indicating the signal is being sent.  ( It flashes on Port3 pin 6/8 )
The BOB does show a red LED for those ports also.
Re: No signal to laser pwm port
« Reply #6 on: April 03, 2024, 11:21:22 AM »
I tried another ESS and BOB and the results were the same, None of the output ports are showing a signal.
The SWM port ( port3 pin6 ) shows .02v, when test fire is selected the volts go down to -.060.