Problems with preheating (IDEX) (Preheat Macro)

[Anawandur]

Hello,
I have a reference to a preheat macro in the start.g file of my IDEX printer, which always heats the print bed according to the loaded filament. At the end of start.g, there's also a T0 command.
In my slicer, I sliced a part with T0. In the DWC, PETG is loaded for T0, and PLA is loaded for T1.
When I start the print, the printer first preheats for T1 (PLA), then for T0 (PETG), and finally executes the slicer start code.
I think the problem is that, in the start.g file, the information about which tool will be used is not yet available, which causes this confusion. If I load the same filament for both tools, there’s no issue, of course. Does anyone understand my problem and maybe have a solution for it?

Thanks and best regards!

Start.g

M291 P"Start.g wird ausgeführt" S0
if !move.axes[0].homed || !move.axes[1].homed || !move.axes[2].homed
  G28
M98 P"/Macros/SUB/CheckDoor"          ;Prüfung ob die Tür entsprechend zum Material geöffnet oder geschlossen sein muss
M561                                  
M703                                  
M106 P3 S255                           ; LED schalten 25%
M98 P"/Macros/SUB/Preheat"            ; Vorheizen Macro
G28 Z0                                ; Z Homen
M98 P"/Macros/Buildplate_Z-Offset"    ;Z-Offset der entsprechenden Platte
T0

Preheat Macro

if (move.extruders[0].filament == "PLA" || move.extruders[1].filament == "PLA") 
   G4 S1
   M300 S600 P100
   G4 S2
   M300 S600 P100
   M291 P"PLA 60°C" R"Es wird für PLA vorgeheizt" S0 T4
   G4 S5
   M106 P4 S255 ;Gehäuse Lüfter
   M190 S60
   M116 H0.5
 
if (move.extruders[0].filament == "PETG" || move.extruders[1].filament == "PETG") 
   G4 S1
   M300 S500 P100
   G4 S2
   M300 S800 P100
   M291 P"PETG 85°C" R"Es wird für PETG vorgeheizt" S0 T4
   G4 S5
   M106 P4 S120 ;Gehäuse Lüfter
   M190 S85
   M116 H0.5
 
 
if (move.extruders[0].filament == "ASA" || move.extruders[1].filament == "ASA") 
   M300 S500 P100
   G4 S2
   M300 S800 P100
   M291 P"ASA 85°C" R"Es wird für ASA vorgeheizt" S0 T4
   G4 S5
   M106 P4 S120 ;Gehäuse Lüfter
   M190 S85
   M116 H0.5
 
if (move.extruders[0].filament == "PP" || move.extruders[1].filament == "PP") 
   M300 S500 P100
   G4 S2
   M300 S800 P100
   M291 P"PP 80°C" R"Es wird für PP vorgeheizt" S0 T4
   G4 S5
   M106 P4 S25 ;Gehäuse Lüfter
   M190 S80
   M116 H0.5   
if (move.extruders[0].filament == "PA12CF" || move.extruders[1].filament == "PA12CF") 
   M300 S500 P100
   G4 S2
   M300 S800 P100
   M291 P"PA12CF 90°C" R"Es wird für PA12CF vorgeheizt" S0 T4
   G4 S5
   M106 P4 S120 ;Gehäuse Lüfter
   M190 S90
   M116 H0.5