Setting Reptier-Host up for using a heated bed
I use a MK3 heated bed for my Vertex printer, this is how I changed the configuration in Reptier-Host for it.
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The first step after installing the heated bed, is to change the G-Code used by Reptier to enable the heated bed. This is done by pressing the "Slicer" tab , then "Configuration" in Cura settings under "Print" you then select "G-Codes".
In the "Start G-Code" you need to find the line with "M82 ; Extruder in absolute mode" after that you append the following lines
M82 ; Extruder in absolute mode
; Enable heated bed
{IF_BED}M190 S{BED}
; Activate all used extruder
In the "End G-Code" you need to ensure that there is a line that turns the Heated bed off again:
G92 E0 ; Reset extruder position
M140 S0 ; Disable heated bed
M84 ; Turn steppers off
Mine had this as the default.
That's it (Source: http://www.k8xxx-3dprinters.crimed.be/w/index.php?title=Installing_a_reprap.me_MK3_heated_bed)