Connecting SBl 1360 motor controller to FRDM KL25Z microcontroller

Hi,
I would want to send a PWM signal from my FRDM KL25Z microcontroller to the Roboteq 1360 motor controller. I have configured the motor controller to receive pulse input. I have connected my board to pin 4,5 and 14 of the motor controller. However, it detects it as a digital input when I check it on the Roborun software instead of a pulse input. Can you please help me to rectify this problem? Thank you