|MightyBx IVB Parallel Port Signal Pin Assignments|
The MightyBx IVB uses a standard PC Parallel Port interface to attach to the Desktop computer. Parallel port signal wires are electronically buffered from the motor driver chips. Motor step signals are normally low.Axis X motor Step is on Pin 2, Direction is on Pin 3, Limit Switch on Pin 11.Axis Y motor Step is on Pin 4, Direction is on Pin 5, Limit Switch on Pin 12.Relay A is on Pin 4, Relay B is on Pin 5.Axis Z motor Step is on Pin 8, Direction is on Pin 9, Limit Switch on Pin 13.HomeMd on Pin 1 must be high during the homing sequence to synchronize the two(2) Y axis motors.ENABLE on Pin 14 engages the motors when high.*INIT on Pin 16 disables the controller when Low.HIPWR on Pin 17 enables high current to motors, when low the current is about 1/3 of the high current.
During machine inactivity the motors are idling at the low power current level to reduce motor heating and provide a holding torque for the attached mechanisms.
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