diff --git a/rrf3.x/sys/config.g b/rrf3.x/sys/config.g
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+++ b/rrf3.x/sys/config.g
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+; Configuration file for Duet WiFi / Ethernet running RRF3 on E3D Tool Changer
+; executed by the firmware on start-up
+
+; General preferences
+M111 S0 						; Debugging off
+G21 							; Work in millimetres
+G90 							; Send absolute coordinates...
+M83 							; ...but relative extruder moves
+M555 P2 						; Set firmware compatibility to look like Marlin
+
+; Network
+M550 P"ToolChanger" 			; Set machine name
+;M587 S"ssid" P"password"		; WiFi Settings
+;M552 S1 P"ssid"				; Enable WiFi Networking
+M552 S1							; Enable Networking
+M586 P0 S1 						; Enable HTTP
+M586 P1 S0 						; Disable FTP
+M586 P2 S0 						; Disable Telnet
+
+M667 S1 						; Select CoreXY mode	
+
+; Drive direction
+M569 P0 S0 						; Drive 0 X
+M569 P1 S0 						; Drive 1 Y
+M569 P2 S1 						; Drive 2 Z
+M569 P3 S0 						; Drive 3 E0
+M569 P4 S0 						; Drive 4 E1
+M569 P5 S1 						; Drive 5 E2
+M569 P6 S1 						; Drive 6 E3
+M569 P7 S0 						; Drive 7 COUPLER
+M569 P8 S0 						; Drive 8 UNUSED
+M569 P9 S0 						; Drive 9 UNUSED
+
+M584 X0 Y1 Z2 C7 E3:4:5:6 								; Apply custom drive mapping
+M208 X-35:328.5 Y-49:243 Z0:300 C0:500	 				; Set axis maxima & minima
+M92 X100 Y100 Z1600 C200 E834:834:834:834				; Set steps per mm assuming x16 microstepping
+M350 E16:16:16:16 I1 									; Configure microstepping with interpolation
+M350 C16 I10											; Configure microstepping without interpolation
+M350 X16 Y16 Z16 I1										; Configure microstepping with interpolation
+M566 X400 Y400 Z8 C2 E2:2:2:2							; Set maximum instantaneous speed changes (mm/min)
+M203 X35000 Y35000 Z1200 C10000 E5000:5000:5000:5000	; Set maximum speeds (mm/min)
+M201 X6000 Y6000 Z400 C500 E2500:2500:2500:2500			; Set accelerations (mm/s^2)
+M906 X1800 Y1800 Z1330 C400 I30   						; Idle motion motors to 30%
+M906 E1000:1000:1000:1000 I10     						; Idle extruder motors to 10%
+
+
+; Endstops
+M574 X1 Y1 S3 					; Set X / Y endstop stall detection
+M574 Z0 						; No Z endstop
+M574 C1 S3						; Stall detect coupler at low end of its range
+
+; Z probe
+M558 P8 C"zstop" H3 F360 I0 T20000 	; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
+G31 P200 X0 Y0 Z0	 				; Set Z probe trigger value, offset and trigger height
+M557 X10:290 Y20:180 S40 			; Define mesh grid
+
+;Stall Detection
+M915 C S6 F0 H200 R4700					; Coupler
+
+;Stall Detection
+M915 X Y S3 F0 H400 R4700				; X / Y Axes
+
+; Heaters
+M308 S0 P"bedtemp" Y"thermistor" A"Bed" T100000 B4138 C0 		; Set thermistor 
+M950 H0 C"bedheat" T0											; Bed heater
+M143 H0 S225 													; Set temperature limit for heater 0 to 225C
+M140 H0															; Bed heater is heater 0
+
+M308 S1 P"e0temp" Y"thermistor" A"T0" T100000 B4725 C7.06e-8 	; Set thermistor
+M950 H1 C"e0heat" T1											; Extruder 0 heater
+M143 H1 S305 													; Set temperature limit for heater 1 to 300C
+
+M308 S2 P"e1temp" Y"thermistor" A"T1" T100000 B4725 C7.06e-8 	; Set thermistor
+M950 H2 C"e1heat" T2											; Extruder 0 heater
+M143 H2 S305 													; Set temperature limit for heater 2 to 300C
+
+M308 S3 P"e2temp" Y"thermistor" A"T2" T100000 B4725 C7.06e-8 	; Set thermistor
+M950 H3 C"duex.e2heat" T3										; Extruder 0 heater
+M143 H3 S305 													; Set temperature limit for heater 3 to 300C
+
+M308 S4 P"e3temp" Y"thermistor" A"T3" T100000 B4725 C7.06e-8 	; Set thermistor
+M950 H4 C"duex.e3heat" T4										; Extruder 0 heater
+M143 H4 S305 													; Set temperature limit for heater 4 to 300C
+
+
+; Tools
+M563 P0 S"T0" D0 H1 F2 					; Define tool 0
+G10 P0 X0 Y0 Z0 						; Reset tool 0 axis offsets
+G10 P0 R0 S0 							; Reset initial tool 0 active and standby temperatures to 0C
+
+M563 P1 S"T1" D1 H2 F4 					; Define tool 1
+G10 P1 X0 Y0 Z0 						; Reset tool 1 axis offsets
+G10 P1 R0 S0 							; Reset initial tool 1 active and standby temperatures to 0C
+
+M563 P2 S"T2" D2 H3 F6 					; Define tool 2
+G10 P2 X0 Y0 Z0 						; Reset tool 2 axis offsets
+G10 P2 R0 S0 							; Reset initial tool 2 active and standby temperatures to 0C
+
+M563 P3 S"T3" D3 H4 F8 					; Define tool 3
+G10 P3 X0 Y0 Z0 						; Reset tool 3 axis offsets
+G10 P3 R0 S0 							; Reset initial tool 3 active and standby temperatures to 0C
+
+; Fans
+M950 F1 C"fan1"
+M950 F2 C"fan2"
+M950 F3 C"duex.fan3"
+M950 F4 C"duex.fan4"
+M950 F5 C"duex.fan5"
+M950 F6 C"duex.fan6"
+M950 F7 C"duex.fan7"
+M950 F8 C"duex.fan8"
+
+M106 P1 S255 H1 T70				; T0 HE
+M106 P2 S0						; T0 PCF
+M106 P3 S255 H2 T70 			; T1 HE
+M106 P4 S0						; T1 PCF 
+M106 P5 S255 H3 T70 			; T2 HE 
+M106 P6 S0 						; T2 PCF
+M106 P7 S255 H4 T70				; T3 HE
+M106 P8 S0						; T3 PCF
+
+M593 F50						; cancel ringing at 50Hz (https://forum.e3d-online.com/threads/accelerometer-and-resonance-measurements-of-the-motion-system.3445/)
+;M376 H15						; bed compensation taper
+
+;tool offsets
+; !ESTIMATED! offsets for:
+; V6-tool: X-9 Y39 Z-5
+; Volcano-tool: X-9 Y39 Z-13.5
+; Hemera-tool: X-37.5 Y43.5 Z-6
+
+G10 P0 X-9 Y39 Z-5					; T0
+G10 P1 X-9 Y39 Z-5					; T1
+G10 P2 X-9 Y39 Z-5					; T2
+G10 P3 X-9 Y39 Z-5					; T3
+
+;deselect tools
+T-1
+
+;M572 D0 S0.2 						; pressure advance T0
+;M572 D1 S0.2 						; pressure advance T1
+;M572 D2 S0.2 						; pressure advance T2
+;M572 D3 S0.2 						; pressure advance T3
+
+M501; load config-override.g