mach3 won't reset

[john swift]

If the machine has been working for a while check the limit switch cables for damage

repeatedly being flexed in the same place will break the wires
very often near to the connectors connecting the limit switch to the cable

is your controller like this

web page gives details of wiring to the various connectors
https://www.probotix.com/wiki/index....reakout_Board:

if you are getting "limit switch triggered" before the machine moves

do you know if the limit switches are normally open or normally closed ?

un plug the limit swich cables and in mach3 change the limit switch setting


assuming the switches are normally closed so the BOB input is low until a switch opens

in mach3 ports and pins
change the limit switch pins from active high to active low ( or vice versa depending on your settings)

this will disable the limit switches so your control will not see a trigger from a faulty switch or cable

if your control now works you will need to check the limit switches and cables

if you still getting spurious triggers you may need to open the control box to check the 5V supply to the breakout board


John

PS
do you have a multimeter to do continuity tests and check various voltages