If the A axis isn't rotating when pressing the jog command or if it will rotate with multiple quick presses, check the following settings in the firmware tool.
Rotational Axes
Ensure 376 Rotational Axes are enabled.
In the console or diagnostic report it will read.
$376 = 1
The closed-loop stepper motors need to be energized at all times to respond to jogging commands right away. If the motor is not energized, it can take multiple quick presses of the jog buttons before the motors respond. Make sure the following setting is enabled in the firmware tool.
Steppers Deenergize
37 Steppers deenergize
In the console or diagnostic report it will be
$37=8
LongMill with Spindle Kits and Vortex
Customers with the spindle kits are recommended to enable the Z axis for 37 Steppers deenergize. When using the spindle kit with the vortex the following settings are:
In the console or diagnostic report the numerical value is
$37=12
#vortex a-axis, #a-axis movement, #vortex rotating