Galil DMC-1800, DMC-1700 user manual PWM/STEP OUT Sign/Direction Error

PWM/STEP OUT

Sign/Direction

Error

Output 1-Output 8 Output 9-Output 16 (DMC-1750 thru 1780

For stepper motors: The STEP OUT pin produces a series of pulses for input to a step motor driver. The pulses may either be low or high. The pulse width is 50%. Upon Reset, the output will be low if the SM jumper is on. If the SM jumper is not on, the output will be Tri-state.

Used with PWM signal to give the sign of the motor command for servo amplifiers or direction for step motors.

The signal goes low when the position error on any axis exceeds the value specified by the error limit command, ER.

These 8 TTL outputs are uncommitted and may be designated by the user to toggle relays and trigger external events. The output lines are toggled by Set Bit, SB, and Clear Bit, CB, instructions. The OP instruction is used to define the state of all the bits of the Output port.

204 • Appendices DMC-1700/1800