Yaskawa YASNAC PC NC Programming Manual - Manual (Page 233)

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YASNAC PCNC Programming Manual Chapter 4: Enhanced Level Commands
(b) Automatic decelerating distance designation function
The deceleration distance (tangential direction) which is specified by address L in the
G107 block is automatically determined according to the P command to be specified in the
G 107 block. The deceleration distance L is calculated in the following manner: P ×
∆
t ×
N = L.
This function is valid when all of the following requirements are satisfied.
• Parameter pm4031 D2 = 1
• A value equal to or greater than “1” is set for deceleration distance multiplication
parameter pm2585.
• Address L is not specified in the G107 block, or G107 is not specified with the param-
eter setting of “pm4031 D 1 = 1”. For details of pm4031, refer to item (c).
If all of the requirements indicated above are satisfied, the deceleration distance L is cal-
culated by the following formula.
L’ =P ×
∆
t × n ³ 600
(where,
∆
t = Ts + Tp)
where,
L’: Deceleration distance to be calculated (mm)
P: Decelerated feedrate specified by the corner feedrate designation function (mm/min)
If address P is not specified, the value set for pm0860 is used.
Ts: Acceleration/deceleration time constant of X-axis cutting feedrate
(see) (Ts = pm2501 × 0.001)
Tp: 1 ³ X-axis position loop gain (see) (Tp = 100 ³ pm 1580)
n: Deceleration distance multiplication ratio set for pm2585
(1 = 0.1 time)
This function is invalid if n = 0.