add second heater bed

yaman

hi every one
I try to add second heater bed but I can't add the second heater bed in web interface or reading temperature
I have pt100 and thermocouple boards: MAX31856
I add first heat bed without any problem I can read and run the heater
what I want to do is read the temperature from second sensor and then turn on and off each bed split the heater bed is keenovo 220/750W so I think the thermo type K
so please help
this is me config is Duet Web Control 2.0.0-RC2 / RepRapFirmware 2.02(RTOS)

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2 on Tue Dec 11 2018 13:08:00 GMT+0300 (Arabian Standard Time)

; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

; Network
M550 P"My Printer" ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
; M569 P0 S0 ; Drive 0 goes forwards=0 BACKWARD = 1 0==X
;M569 P1 S1 ; Drive 1 goes forwards=0 BACKWARD = 1 1==Y
M569 P2 S1 ; Drive 2 goes forwards=0 BACKWARD = 1 2==Z
M569 P3 S0 ; Drive 3 goes forwards=0 BACKWARD = 1 3==E
M569 P4 S1
M569 P5 R1 T2.5:2.5:5:0
M569 P6 R1 T2.5:2.5:5:0
M569 P7 R1 T2.5:2.5:5:0
M569 P8 R1 T2.5:2.5:5:0

M584 X7 Y8

3M350 X16Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X321 Y260 Z396.03 E500.00 ; Set steps per mm
M566 X400.00 Y400.00 Z12.00 E420.00 ; Set maximum instantaneous speed changes (mm/min)
M203 X2500.00 Y2500.00 Z1000.00 E1200.00 ; Set maximum speeds (mm/min)
M201 X50.00 Y50.00 Z20.00 E100.00 ; Set accelerations (mm/s^2)
M906 X1800.00 Y1800.00 Z800.00 E500.00 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X475 Y265 Z645 S0 ; Set axis maxima

; Endstops
M574 X2 Y2 Z2 S0 ; Set active LOW =0 ACTIVE HIGH = 1 endstops

; Z-Probe
M558 P5 H30 F120 T6000 ; Set Z probe type to switch and the dive height + speeds
G31 P495 X0 Y0 Z30 ; Set Z probe trigger value, offset and trigger height
M557 X15:195 Y15:195 S20 ; Define mesh grid

; Heaters
M305 P0 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C
M305 P100 T100000 B4138 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H2 S120

; Fans
M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

; Automatic saving after power loss is not enabled

; Custom settings are not configured

dc42

If heater 2 is your second bed heater, use this in config.g to enable the second bed heater:

M140 H0:2

yaman

I add this line
but still bed 2 not shown

yaman

this the line I add
M305 P101 T100000 B4138 R4700
M140 H0:2 s 120

dc42

I'm sorry, I gave you the wrong command. The correct command to enable the second bed heater is:

M140 P1 H2

P1 means bed heater 1 (the original is bed heater 0), and H2 means use heater 2 for it.

To get it to show up in DWC I think you will need to give heater 2 a heater name in its M305 command.

yaman

@dc42 said in add second heater bed:

M140 P1 H2

witch channel is this port
because second sensor connect with this port
thermo type K

yaman

I Add this code to define the Bed 2
M305 P101 S"Bed 2 "
but how to get thermo redding

dc42

The channel numbers for the first MAX31856 based thermocouple interface are 150 and 151.

yaman

@dc42 said in add second heater bed:

150

I add this lines
M305 P101 X150 S"bed_2"T100000 B4138 R4700
M140 P101 H2 S120
but I got on screen not correct reading

dc42

Use P2 in the M305 command (heater 2) and P1 in the M140 command (bed heater 1).