i looked my post over after i wrote it and i did not provide enough information I'm sorry, I'm trying to control the increase and decrease of frequency to help protect the motor when you turn it on and so it does not miss pulses when it starts up. I'm using a 23L104S-LW8 stepper motor and a MBC25081TB driver, the plc I'm using is a unitronics V200-18-E6B I/O module