Yaskawa YASNAC PC NC Programming Manual - Manual (Page 28)

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YASNAC PCNC Programming Manual Chapter 1: Programming Basics
(3) Acceleration and Deceleration for Cutting Feed
For cutting feed (G01 to G03 mode), feedrate is controlled by the automatic acceleration/
deceleration in the exponential pattern.
Fig. 1.2.6.3 Acceleration/Deceleration in Exponential Pattern
Time constant for cutting feed and feedrate bias are set for parameters. For tapping, time constant
and feedrate bias can be set independently.
Table 1.2.6.4: Parameters for Tapping
1. For the parameters indicated above, the most optimum values are set for respective
machines. Do not attempt to change the setting unless necessary.
G code X-axis Y-axis Z-axis 4th-axis 5th-axis
Feedrate time constant pm2501 pm2502 pm2503 pm2504 pm2505
Feedrate bias pm2821 pm2822 pm2823 pm2824 pm2825
Tapping time constant pm2511 pm2512 pm2513 pm2514 pm2515
Tapping feedrate bias pm2831 pm2832 pm2833 pm2834 pm2835