| Symptom | Likely Cause | Solution | |---------|--------------|----------| | Controller powers on but no display | Wrong display resolution/driver in image | Restore backup. Try image from manufacturer for exact panel size (7", 10", etc.). | | Boot loop or kernel panic | Image for wrong CPU (ARM vs x86) | Check original controller’s processor. Use file cnc-auto-g156.img (on Linux) to guess architecture. | | Touch screen not responding | Calibration data missing | Re‑calibrate via hidden menu (often enter 123456 or long press corner). | | CNC motion erratic (steps wrong) | Axis parameters not set | Restore your machine’s parameter backup (usually a separate .dat or .xml file). | | “Partition table error” when writing | Image corrupt or incomplete | Re‑download the image from a trusted source. Verify checksum (SHA256) if provided. | | Image larger than target card | Raw image includes empty space | Use dd with conv=sparse or shrink the image (advanced). Safer: use a larger card. |
The file is a specialized system image typically used for CNC controller retrofits , most commonly associated with the SMC5-5-N-N Go to product viewer dialog for this item. (or similar DDCS-style) standalone motion controllers.
⚠️ Don't forget to edit config.txt and set your steps/mm before first run. cnc-auto-g156.img
The g156 may be printed on a label near the controller’s memory slot or on the mainboard.
: Because it is an "auto" image, the controller detects the file on your USB drive at boot and can reflash the internal FPGA logic without requiring a PC connection, effectively "upgrading" the hardware's brain in seconds. How to Use It | Symptom | Likely Cause | Solution |
Store this backup in at least two safe locations (PC + cloud or external HDD).
backup before writing, verify hardware compatibility, and test without cutting tools first. If you are not confident, hire an industrial automation technician. Use file cnc-auto-g156
Why would a file like "cnc-auto-g156.img" exist on a shop floor network? The answer lies in the fragility of industrial hardware.
A: Yes, but you must rebuild the bootable image without changing partition UUIDs or bootloader offsets. Tools like genext2fs or mke2fs + dd are required. This is for experts only.
: Place the cnc-auto-g156.img file in the root directory of a FAT32-formatted USB stick.