wire sticking

Wire sticking is different in an analog or digital connection. What controller do you have? What weld power supply do you have? How is the welder connected to the controller (analog or digital)?

Basically, if you are not welding and the controller senses the weld wire is touching ground you get "wire stick". This is most commonly caused by the weld wire touching ground (the liner passes through the fence to the bulk spool and chafes through and touches the fence, or the bulk spool is on the machine frame (always insulate the weld wire from ground)). Another thing to look at is the weld positive cable that runs up the arm of the robot. If the insulation has worn through it can touch the robot (that is grounded) and cause "wire stick" alarms.