Siemens SINUMERIK 840D sl Programming Manual page 381

Modal/non-modal addresses
Modal addresses remain valid with the programmed value (in all subsequent blocks) until a new
value is programmed at the same address.
Non-modal addresses only apply in the block, in which they were programmed.
Example:
Program code
N10 G01 F500 X10
N20 X10
Addresses with axial extension
In addresses with axial extension, an axis name is inserted in square brackets after the
address. The axis name assigns the axis.
Example:
Program code
FA[U]=400
See also Table "Fixed addresses (Page 1236)".
Extended address notation
Extended address notation enables a larger number of axes and spindles to be organized in a
system.
An extended address consists of a numeric extension and an arithmetic expression assigned
with an "=" character. The numeric extension has one or two digits and is always positive.
The extended address notation is only permitted for the following direct addresses:
Address
X, Y, Z, ...
I, J, K
S
SPOS, SPOSA
M
H
T
F
Examples:
Program code
X7
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
Comment
; Feedrate F from N10 remains active until a new feedrate
is entered.
Comment
; Axis-specific feedrate for U axis.
Meaning
Axis addresses
Interpolation parameters
Spindle speed
Spindle position
Special functions
Auxiliary functions
Tool number
Feedrate
Comment
; No "=" required, 7 is a value, but the "=" character can also be
used here
Fundamentals
2.15 Other information
381