Cannot clear E-STOP, without error

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AlessandroEmm
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Junior Member

23 Feb 2026 15:47 #343346 by AlessandroEmm

Cannot clear E-STOP, without error was created by AlessandroEmm

Setup:

LinuxCNC with Remora SPI controller
4-axis gantry configuration (XYYZ - dual Y motors)

My System is stuck in E-STOP state and cannot be cleared with F1 or any other method in Axis. F2 (Machine On) is greyed out all the time. The HAL states look fine from Remora side, thus i'm pretty certain that my issue is with some state/config that is LinuxCNC core. I tried other Frontends like gmoccapy and they behave pretty much the same except that they seem to have some timeout on e-stop blockage and claims that something external is blocking it while axis is keeping at it and never times out, but nothing ever changes even after minutes.

I have endstops configured too, but still tried no_force_homing to ensure its not a problem with endstops.

Some Infos about my setup:HAL Pin States:

iocontrol.0.emc-enable-in = TRUE (from remora.SPI-status)
iocontrol.0.user-enable-out = TRUE
iocontrol.0.user-request-enable = FALSE (never changes)
remora.SPI-status = TRUE
remora.SPI-enable = TRUE
motion.enable = TRUE
motion.motion-enabled = FALSE

HAL Configuration is default remora:

net user-enable-out <= iocontrol.0.user-enable-out => remora.SPI-enable
net user-request-enable <= iocontrol.0.user-request-enable => remora.SPI-reset
net remora-status <= remora.SPI-status => iocontrol.0.emc-enable-in

INI Configuration:

[TRAJ]
JOINTS = 4
NO_FORCE_HOMING = 1
COORDINATES = XYYZ

[KINS]
JOINTS = 4
KINEMATICS = trivkins coordinates=XYYZ kinstype=BOTH

[EMCMOT]
SERVO_PERIOD = 5000000
TRAJ_PERIOD = 5000000
BASE_PERIOD = 0

[TASK]
TASK = milltask
CYCLE_TIME = 0.010

What is interesting is that noticed on click of e-stop the previously greyed out box of override limits becomes clickable.

Thanks for any help,
Alessandro

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andrax
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Elite Member

23 Feb 2026 17:57 #343351 by andrax

Replied by andrax on topic Cannot clear E-STOP, without error

Hi,

I think you have a syntax error.
setp iocontrol.0.emc-enable-in 1

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tuxcnc
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Premium Member

23 Feb 2026 19:03 - 23 Feb 2026 19:12 #343355 by tuxcnc

Replied by tuxcnc on topic Cannot clear E-STOP, without error

AlessandroEmm wrote:

```
[b]Configuration is default remora:[/b]
```

[b][code]net user-enable-out <= iocontrol.0.user-enable-out => remora.SPI-enable

[/code][/b]

[b][code]net user-request-enable <= iocontrol.0.user-request-enable => remora.SPI-reset

[/code][/b]

[b][code]net remora-status <= remora.SPI-status => iocontrol.0.emc-enable-in

[/code][/b]

I did it a long time ago and unfortunately I don't remember...
But I think I had the same problem.
My configuration looks like this:

# estop and SPI comms enable and feedback

#  net user-enable-out     <= iocontrol.0.user-enable-out          => remora.enable
#  net user-request-enable <= iocontrol.0.user-request-enable      => remora.reset
#  net remora-status       <= remora.status            => iocontrol.0.emc-enable-in

loadrt estop_latch
addf estop-latch.0 servo-thread
net estop-loopout       iocontrol.0.emc-enable-in  <= estop-latch.0.ok-out
net user-enable-out     iocontrol.0.user-enable-out  => remora.enable
net estop-loopin        remora.status  => estop-latch.0.ok-in => estop-latch.0.reset
net estop-reset         iocontrol.0.user-request-enable => remora.reset
net remote-estp         estop-latch.0.fault-in  <= remora.input.12.not

This is Remora via Ethernet, but the differences are probably cosmetic.

Last edit: 23 Feb 2026 19:12 by tuxcnc. Reason: Bad formatting

The following user(s) said Thank You: AlessandroEmm

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AlessandroEmm
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Junior Member

23 Feb 2026 21:47 - 23 Feb 2026 22:03 #343368 by AlessandroEmm

Replied by AlessandroEmm on topic Cannot clear E-STOP, without error

Thanks Tuxcnc - I tried to replicate this with the SPI-fields of remora-spi. (minus the external pin) Unfortunately the behaviour stays the same. Besides looping in the external e-stop does it do something different in terms of iocontrol states?

Last edit: 23 Feb 2026 22:03 by AlessandroEmm.

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AlessandroEmm
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Junior Member

23 Feb 2026 22:03 #343372 by AlessandroEmm

Replied by AlessandroEmm on topic Cannot clear E-STOP, without error

Sorry, I dont follow, what Syntax error are you referring to?

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