Siemens SINUMERIK 840D sl Function Manual page 379

● Directional compensation ($AN_CEC_DIRECTION[t])
● Table multiplication ($AN_CEC_MULT_BY_TABLE[t])
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
This system variable can be used to define whether the compensation table [t] should
apply to both travel directions of the base axis or only either the positive or negative
direction.
0: Table applies to both directions of travel of the base axis
1: Table applies only to position direction of travel of the base axis
-1: Table applies only to negative direction of travel of the base axis
Possible applications:
Position-dependent backlash compensation can be implemented using two tables, one of
which affects the positive traversing direction, the other of which affects the negative
traversing direction of the same axis.
With the table multiplication function, the compensation values of any table can be
multiplied by those of any other table (or even by the same table). The product is added
as an additional compensation value to the total compensation value of the compensation
table.
Syntax:
$AN_CEC_MULT_BY_TABLE[t
with:
t = index of table 1 of compensation axis
1
t = number of table 2 of compensation axis: Please note that the number and index of the
2
same table are different! In general: Table number = table index + 1
] = t
1 2
Compensations (K3)
Interpolatory compensation
379