ALARM:1Hard limit triggered. Machine position is likely lost due to sudden and immediate halt. Re-homing is highly recommended - GRBL - LightBurn Software Forum
How to fix Homing Fail/Alarm 8/Alarm 9?
Grbl ALARM:3 (Abort during cycle) at end of job (low priority) · Issue #137 · cncjs/cncjs · GitHub
grbl error and alarm codes - Diode Laser Wiki
How to fix Homing Fail/Alarm 8/Alarm 9?
Is it normal that Alarm mode is on, every time you open a new serial connection? · Issue #731 · gnea/grbl · GitHub
Grbl Device (Gantry)
GRBL Alarms & Errors - gSender CNC
CNCJS Bitsetter sending Alarm 4 - Unsupported - Carbide 3D Community Site
GRBL Error List
GRBL going in alarm states when connecting to it · Issue #1449 · grbl/grbl · GitHub
Homing return Alarm when the limit switch is engaged · Issue #1583 · grbl/ grbl · GitHub
ALARM:4 Probe fail. Probe is not in the expected initial state before starting probe cycle. · Issue #969 · bdring/Grbl_Esp32 · GitHub
GRBL limit switch alarm problem - Advice - V1 Engineering Forum