Quick Reference: Tablet Error Codes

Error	Name	Primary Cause	Key Resolution Step
101	Unexpected Flow Detected	A flowmeter senses movement while not in use.	Check valves, leaks, and wiring on that meter.
102	Failed SRAM	Master controller's memory chip has failed.	Contact your dealer for a replacement controller.
103	Emergency Stop	Safety halt triggered by a hardware fault.	Reboot machine & restart app.
104	Low Voltage	Battery below 12.3V or poor capacity.	Charge battery; check ground wires.
105	Critical Device Missing	CAN bus cannot find a required component.	Check power, then CAN bus resistance (~60 Ω).
201	No Flow	Meter detected no movement during a mix.	Check pumps, airlocks, and filters.
202	Inductor Not Empty	Weight is above "empty" threshold.	Run Set Scale Empty Weight Wizard in Manual Mode.
203	Flow Not Stopping	Flow detected after stop or high vibration.	Improve pump isolation or adjust reaction speed.
204	Device Missing	Hardware not found on the CAN bus.	Check power, then CAN bus resistance.
208	Failed CAN Message	Module stopped sending updates (3-blink).	Check for low voltage spikes or loose cables.
301	Failed Device Msg	Master cannot send command to a module.	Check power and CAN bus resistance, then verify tablet config in Diagnostics Mode.
302	Failed Comm	Tablet cannot "handshake" with machine.	Reboot machine and restart the app.
401	Connection Lost	Tablet lost its link to the hardware.	Check tablet power settings and distance.
900	Unknown Error	Unhandled software or logic exception.	Screenshot the modal; email support@praxidyn.com.
901	Missing Data Error	A broken data link is missing information needed for a calculation (e.g. a unit conversion).	Save the mix for recovery, then restart it.
902	Bad Data From Machine Error	A flowmeter reported a smaller total than its last reading.	Recover the mix; check that flowmeter's wiring if it recurs.

Critical Maintenance Checklists: The "60 Ohm" Test

For any communication error (105, 204, 208, 301), verify the CAN bus health — see CAN Bus Resistance Check for the full testing procedure.

Critical Maintenance Checklists: Power & Battery Health

See Power Check for the full procedure. Quick reference:

• 12.3V: The threshold for low voltage warnings.

• 13.8V - 14.2V: The required charging voltage to add capacity back to the battery.

• Vibration: If the tablet reflection is blurry, your inductor needs isolation mounts to prevent Error 203.