New Mesa 7i96 build, no stepper movement

Hello All,
I am on day 3 of getting to know LinuxCNC and have run out of ideas to fix this problem. This is a 4x4 plasma gantry build with 2 Y-axis steppers.

My setup:
Mesa 7i96 board, FW version 43 installed at factory
4 KL-5056E drives
preempt RT kernel: Linux Linuxcnc 3.2.0-6-rt-686-pae #1 SMP PREEMPT RT Debian 3.2.102-1 i686 GNU/Linux
Linuxcnc uspace 2.8 master branch version: 1:2.8.0~pre1.4096.g3b009f9

I have tried lots of different ini and hal configurations from examples found in this forum and others. My files load properly but will not move the steppers at all. They tick when LinuxCNC loads, but no other movement.

I have gone through the wiring several times and it seems solid. Drives are connected to Mesa 7i96 using Step/DIR (-), I even tried (+) for fun. Motor wiring verified with ohm meter through to the drives. All devices have power and green status. The motors are stalled and warm as expected. LinuxCNC appears to be talking to the Mesa board. JT's 7i96 config utility can read in the board details. Jumper settings on the drives are set to 5.6 amps (matched to steppers) and 1600 steps/rev. I reversed the motor current switches originally because the silk screened legend is different than the online docs.

I have tried multiple settings for DIRSETUP, DIRHOLD, STEPLEN, STEPSPACE, STEP_SCALE, etc. with no change. I have also experimented with AXIS vs JOINT terminology in the hal file. It will only load with this format.

My files are below
Any help is appreciated,
Thank you
Jamie

ini file:


hal file:

Have tried changing these to 5000

# these are in nanoseconds

STEPSPACE = 1500

There are a number of issues with your hal/ini files:

1. I dont think you really want 50 IPS for max velocity unless you have a _very_ fast table,
and you probably want much higher acceleration
(typically acceleration is 2x to 10x the velocity number meaning 1/2 second to 1/10 second to full speed)

2. None of the PID components functions are added (addf'ed) to the servo thread so there's no way the stepgens can run
Something like:

addf pid.x.do-pid-calcs servo-thread
addf pid.y.do-pid-calcs servo-thread
addf pid.y2.do-pid-calcs servo-thread
addf pid.z.do-pid-calcs servo-thread

Between the hardware read and hardware write parts of the addf list

Not sure why these are missing, it may be that you have an old version of the configuration utility

Thanks PCW !!!

After adding those 4 lines I see some signs of life. I can move the X stepper now. It is a little erratic and bounces after I let off the jog key, but it moves. Now it's time to find all the best config settings for my hardware.

Jamie

Thanks for the reply. I have found several lists of settings for the KL-5056 drivers. Now that the axis moves I can experiment with them.

Jamie

kindly inbox me your email or wazp me at +2540708451831 for further discussions since i need your assistance