@t3p3tony All the wheels on one side have fitted eccentric spacers. As they are rotated they move the wheel into the v-slot. Once adjusted the nut on the axel is tightened to hold them in that position. They are integral to the openbuilds system.

Thanks, I updated my Chrome and its working now.
Appreciate the help.

Me too!...…………………..

Thanks for the help!

I would like to see a config file.

There is a segment of this forum for Precision Piezo. THey have nothing on the Orion. I wonder why? I have had trouble getting my Orion to work with Duet. I returned one module that was was either defective, or I ruined it by constant adjusting. With the new PCB installed , the machine locks up with a G30 command. Just one example of the config would be a great help.

I have been wondering what else has changed. You recommended removing the probe deploy and probe retract files. I have replaced them and the printer now moves in the right direction after G30. So maybe its not the new firmware, but instead how G30 uses those files.

; 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 Tue Jun 26 2018 13:43:59 GMT-0700 (Pacific Daylight Time)

; General preferences
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M555 P1 ; Set firmware compatibility to look like RepRapFirmare

;*** The homed height is deliberately set too high in the following - you will adjust it during calibration.
M665 R155 L360 B155 H440 ; Set delta radius, diagonal rod length, printable radius and homed height
M666 X0 Y0 Z0 ; Put your endstop adjustments here, or let auto calibration find them

; Network
M550 PDelta1.1 ; Set machine name
M540 PBE:62:56:56:52:5A ; Set custom MAC address
M552 P192.168.1.25 S1 ; Enable network and set IP address
M553 P255.255.255.0 ; Set netmask
M554 P192.168.1.254 ; Set gateway
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S0 ; Drive 0 goes backwards
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S0 ; Drive 2 goes backwards
M569 P3 S0 ; Drive 3 goes backwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z80 E460.42 ; Set steps per mm
M566 X1200 Y1200 Z1200 E1200 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000 Y18000 Z18000 E1200 ; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z1000 E1000 ; Set accelerations (mm/s^2)
M906 X1600 Y1600 Z1600 E1600 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X155 Y155 Z0 S1 ; Set minimum Z

; Endstops
M574 X2 Y2 Z2 S1 ; Set active high endstops

; Z-Probe
M558 P5 I1 R0.4 H300 F300 X0 Y0 Z0 ; Set Z probe type to switch, the axes for which it is used and the dive height + speeds
G31 X0 Y0 Z-0.1 P1000 ; Set Z probe trigger value, offset and trigger height
M557 R155 S20 ; Define mesh grid

; Heaters
M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S130 ; Set temperature limit for heater 0 to 130C
M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S3000 ; Set temperature limit for heater 1 to 280C

; 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

; 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

; Custom settings are not configured

The problem is when attempting a G30 it slams the motors into the tower endstops and continues until I shut it down. Manual moves are still correct.

@dc42 My current problem is probably due to an error on my part. I attempted to update the firmware and did it incorrectly. I loaded Release 2.01beta1 (Duet 2) and 1.21.2beta1 (Duet 06/085) . When I attempt to move back to 1.21 the update fails. I am now considering formatting the SD card and starting over. Any suggestions would be appreciated.

@dc42 The Piezo was working until I updated the firmware.

I have been trying for 4-5 days to get a Precision Piezo Orion module to work with Duet. Yesterday I did get it working but was still having trouble with the G30 command. It was recommended that I upgrade my firmware and remove the probe deploy retract files. I have successfully done both, but now when I press G30 all three motors start hammering the tower endstops. If I just manually control the effector it moves per normal. About to give up on this idea.