Category: HAL
You can look at the manual, but this was definitely the case at one time.
Edit: the ENA input is actually an active low disable input, that is, it disables
the drive when pulled low. If unconnected, the drive should be enabled.
Is the interface PIN 16 (+24V IN) connected to +24V?
A quick way to check if the drives are enabled is to see if the motor
shaft turns freely. It should hold position if enabled but turn freely if disabled.
Not related to your lack of motion, but to safety:
Its fairly awkward that ENA needs to be powered to disable the drive, but a possible
working arrangement would be to add a pull down resistor on the ENA input so its
normally disabled and then drive it high with a 7I76EU output to enable it
(A 1K 1/2W resistor should work)
