Setting up to resume a print after a power failure
I try this function and cant find file sys/resurrect.g on SD card.
i Seach here:
I make all as wrote here: https://duet3d.com/wiki/Setting_up_to_resume_a_print_after_a_power_failure
;Setting up to resume a print after a power failure
; For 20V power
M911 S16.0:17.5:19.5 // auto-pause at 17,5V, then either stop at 16V or auto-resume at 19.5V
G1 Z2 F2400
G1 E-2 F3600
G1 E2.5 F600
G1 E2.5 F600
What can I do to make the function work?
Firmware Name: RepRapFirmware for Duet
Firmware Electronics: Duet 0.85
Firmware Version: 1.19+5 (2017-08-30)
Web Interface Version: 1.19
If the power voltage drops too quickly when power is removed, then the Duet may not have enough power to create the resurrect.g file. It depends on how large the capacitors are on the output of your power supply.
If your PSU voltage is nominally 20V then you can test the function by sending e.g. M911 S16.0:21.0:22.0 to temporarily increase the voltage thresholds.
If i set M911 S16.0:21.0:22.0 and my voltage 20, then auto-pause and auto-resume will be off, and only save ressurect file will be active and start when voltage drops to 16V.
Do I understand correctly?
No, the pause and file save will occur at 21V.
But my voltage only 20V, it never be 21V.
That's why increasing the threshold to 21V during a print should cause an immediate pause and creation of resurrect.g.
I can't understand
I Have the maximum voltage at the power supply 20 volts. Where there will take 21 volts?
Starting a print and then setting the the threshold temporarily to a voltage higher than your PSU voltage is a way of triggering the power down functionality, to check that it is working.