EdingCNC CPU5A4E Manual page 7

Connection to the stepper motor or servomotor drive
EXAMPLE1 - USE WATCHDOG TO AMPENABLE FOR LEADSHINE DRIVE (POSITIVE PULSE CONNECTION)
The Leadshine drives are OFF when the input is driven, it is opposite of what most of us expect.
Upper jumper to the left (PNP), Lower to the right (ON-SAFE)
Positive pulse connection does not need the +5V, that is the difference with negative pulse connection.
EXAMPLE2 - USE WATCHDOG TO AMPENABLE FOR LEADSHINE DRIVE (NEGATIVE PULSE CONNECTION)
Upper jumper to the right (NPN). Lower jumper to the left (OFF-NOTSAFE)
Negative pulse connection is the standard way to connect this type of drive.
It needs the 5 Volt connection terminal.
See also(*) above.
REMARK
By connecting a drive to the wrong pulse polarity does not harm anything. Nothing will be damaged.
The difference is the speed that you will get on the motor. Just try out by inverting the Pulse inversion in the
software what gives the highest motor speed.
Where is X, Y, Z connected to?
USBCNC allows variable configurations.
Some customers have X Y Z A
Some have X Y Z C
Some have X Z A B
Pulse Inversion
Pulse Inversion
CPU to drive connections
CPU to drive connections