Uccnc hdbb2 wiring help needed

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I've got myself a uccnc hd bb2 bob that has rj45 connectors. Balazs at uccnc explained that the axis connections are as follows

HDBB2 RJ45 pin 1. step --- Drive Pul+
HDBB2 RJ45 pin 2. dir --- Drive Dir+
HDBB2 RJ45 pin 3. gnd --- Drive Pul-
HDBB2 RJ45 pin 3. gnd --- Drive Dir-

I will be wiring to 3 leadshine em705 digital drivers. Would I be correct in assuming that I could link DIR- and PULSE- on the stepper itself ? Or is there a better way to wire the drivers with this BOB ?
Cheers

Andrew

Hi,

Not sure I understand what you mean about linking DIR- and PULSE- on the stepper itself. Unless you have a special stepper with a built-in driver there is no DIR and PULSE on a stepper. Steppers normally only have winding connectors and those are connected to the driver (your Leadshine) motor side, which provides the current and voltage necessary for the motors. DIR and PULSE signals are provided by the motion controller, in my case the UC300ETH, and those signals are connected to a BoB through the DB25 (or other connector types) to drive the opto couplers of the stepper drivers which handles the motors. Do NOT connect the PUL- and the DIR- to the steppers at all, unless you have a special stepper with built in driver.

The last page shows how to connect the driver.