When running two Z motors on different drivers, the acc and current settings apply to both motors if they are mapped as Z?

ok, thank you for the answer. i have set the current to 1500mA in the config. I have two z motors. First i tried running them in series, did not get desired result, so now i am trying running one of the z motors on E1. Sometimes the motors seem fine for a couple of seconds when jogging, then they start again.

Also, when changing config file on the web interface, the board reboots. but is all changes active or do i have to power off also?

Hello, i am sure this question has been asked many times before. I have previously had great success upgrading my delta printer to a duet board. it was some tweaking in the config file to get it running, but now its running great. So i wanted to upgrade my chinese cartesian to a duet also, but I am going mad tryin to get the steppers to stop stuttering. I have tried to make a new config file multiple times, but i dont see any constistency in changing values and when the motors stutters. Right now my X and Y seems ok, but my Z motors keep making noise, stutter and not going where they are supposed to. Checked for voltage drop, changed to better sd card. I am not sure what settings i am supposed to have on current on the motors, since i cant find the data sheet for my motors. (SL42STH40-1504A). Anyone have a pointer where to look?

; Configuration file for Duet Ethernet (firmware version 1.17 to 1.19)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Sun Jan 07 2018 18:24:15 GMT+0100 (W. Europe Standard Time)

; General preferences
M111 S0 ; Debugging off
G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves
M555 P5 ; Set firmware compatibility to look like Repetier
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X250 Y250 Z400 S0 ; Set axis maxima

; Endstops
M574 X1 Y1 Z1 S1 ; Set active high endstops
M558 P0 X0 Y0 Z0 H5 F120 T6000 ; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
G31 P600 X0 Y0 Z2.5 ; Set Z probe trigger value, offset and trigger height
M557 X15:235 Y15:235 S20 ; Define mesh grid

; Drives
M584 X0 Y1 Z2:4 ;Set driver map
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X8 Y8 Z8 E8 I1 ; Configure microstepping with interpolation
M92 X102.5 Y102.5 Z400 E420 ; Set steps per mm
M566 X17 Y17 Z0.4 E4 ; Set maximum instantaneous speed changes (mm/min)
M203 X1000 Y1000 Z4 E17 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z4 E750 ; Set accelerations (mm/s^2)
M906 X1500 Y1500 Z1500 E1500 I50 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Heaters
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S120 ; Set temperature limit for heater 0 to 120C
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S280 ; Set temperature limit for heater 1 to 280C

; 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

; Network
M550 PMy printer ; Set machine name
M540 PBE:EF:DE:AD:FE:ED ; Set MAC address
M552 P192.168.1.20 S1 ; Enable network and set IP address
M553 P255.255.255.0 ; Set netmask
M554 P192.168.1.1 ; Set gateway
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; 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
M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Custom settings are not configured