Macro to stop printing, run some code and then resume print

[timmit99]

I'm looking to mace a macro on my printer pause the current print, run a set of gcode commands that pulse a pin and delay, and then return to the print as if nothing has happened. The machine is a DuetWifi and DueX5

I have created "Trigger2.g" in the "sys" folder and have added "M581 T2 S1 E2 C0" in config.g that will invoke trigger 2 on rising edge on E2 endstop regardless of print status. I have attached a switch to the E2 endstop connector on the dueX5 and when i have the "Trigger2.g" contain just

M42 P100 S255
G4 P10
M42 P100 S0
 
```the pin is pulsed, however after adding more commands to the file the commands seem to be interlaced with the print commands and the print doesnt stop.

[[language]]
;Switch to relative, lift Z 10 mm and return to absolute.
G90
G1 Z10
G91

G1 X100 Y300 F4800; Move to purge location

;Pulse to open the valve
M42 P100 S255
G4 P10
M42 P100 S0

G4 S60; Delay for 60 seconds

;Pulse to close the valve
M42 P100 S255
G4 P10
M42 P100 S0

G4 S5; Delay for pressure build up

I'm stuck on how to proceed with pausing the print, running commands and then resuming the print properly.

[fma]

Try to add a M400 command at the beginning of your macro…

[dc42]

Use M25 to pause the print, then do the M42 commands, then M25 M24 to resume the print.

[timmit99]

Resume with M25 or M24?

[dc42]

M24.