Yes, it is possible. Write a new value to the operation speed change value (BFM#56, #55) during the positioning operation.
* After the operation speed change value is updated, the time required until the operation speed is changed is as follows.
・ During operation at 1 kHz or higher: Within 3 ms
・ During operation at less than 1 kHz: Within 3 pulse output time
* Make sure to access the operation speed change value (BFM#56, #55) with the DTO instruction (double word).