Siemens SINUMERIK 880 Programming Manual page 86

4 Programming of Motion Blocks
4.2.7 Exact positioning G09/G60, G00, continuous path operation G62/G64
The feed motion is reduced towards the end of the block to a rate defined in the machine data
using the function G62. The action of G62 and G64 is modal.
F
F2
F
SET
F1
F3
FG62
Approach to corner deceleration G62
Note:
The reduction velocity for G62 (set in machine data) is not attained precisely. The error
tolerance band is described as follows:
FG62 = Reduction velocity (MD 3)
Fact = Attained "actual" reduction velocity
F = Deceleration step (velocity reduction per IPO cycle)
DECEL
FG62 Fact (FG62 + F
DECEL
where F is calculated from:
DECEL
a = Acceleration (MD 276*) [m/s
tipo = IPO cycle [ms]
mm
F
DECEL
a
=
min
No reduction occurs at the first block limit if F1 FG62 + F
Reduction only to F3 at the second block limit if F2 FG62 + F
4–28
Block limits
F
ACT
)
2
]
m
60
tipo [ ]
ms
•
•
2
s
© Siemens AG 1991 All Rights Reserved
DECEL
DECEL
6ZB5 410-0HD02
SINUMERIK 880, (PG)
05.91
t