Internet PLC Forum

General => Technical support => Topic started by: can on August 28, 2010, 10:45:03 PM

Title: Pulse and direction
Post by: can on August 28, 2010, 10:45:03 PM

Hi. After trying out MD888 for so long, I would say it's a good product. However, there's something I do not understand. If the stepper motor driver is controlled by pulse and direction signals, what determines the speed of the rotation? The pulse frequency?

Thank you.

Regards

Title: Re:Pulse and direction
Post by: support on August 29, 2010, 05:59:08 AM

STEPSPEED command defines the acceleration and maximum number of steppers that the stepper motor should turn after the initial acceleration.

Note that  max pps is only a "desired" speed on T100MD+ PLC and not the ultimate speed. However, on the F-series and Nano-10 PLC the max pps can be accurately output by the stepper motor controller/driver.