Help with 5 phase motor driver

I have an Autonics MD5-ND14 driver, the datasheet is attached.
I set 1 pulse input and full step and it works fine with signal input for clockwise running. However, I failed to change the direction into CCW when I sent the pulse to the CCW signal circuit.
I am not sure I understand the instruction of the signal input circuit. Anyone can explain the datasheet more clearly.
Thanks in advance!

Its configured as step+direction as standard. It can be configured as CW and CCW inputs. Use step+direction if possible, its universally supported.