Siemens SINUMERIK 840D sl Function Manual page 1941

Reading/writing in the part program
The individual sets of sum offset parameters are differentiated according to the number
ranges of system variable $TC_SCP.
The significance of the individual variables is similar to geometry variables $TC_DP3 to
$TC_DP11. Only length 1, length 2 and length 3 are enabled for the basic functionality
(variables $TC_SCP13 to $TC_SCP15 for the first sum offset of the cutting edge).
R5 = $TC_SCP13[ t, d ]
R6 = $TC_SCP21[ t, d ]
R50 = $TC_SCP23[ t, d ]
$TC_SCP43[ t, d ] = 1.234
The above statements also apply to the setup offsets (if the NCK is configured with this
option), i.e.,
R5 = $TC_ECP13[ t, d ]
R6 = $TC_ECP21[ t, d ]
Etc.
When working with setup offsets, "sum offsets fine" are written with the $TC_SCPx system
variables.
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
; Sets the value of the R parameter to the value of the first
component of sum offset 1 for cutting edge (d)
on tool (t).
; Sets the value of the R parameter to the value of the last
component of sum offset 1 for cutting edge (d) on tool (t).
; Sets the value of the R parameter to the value of the first
component of sum offset 2 for cutting edge (d) on tool (t).
; Sets the value of the first component of sum offset 4 for
cutting edge (d) on tool (t) to the value 1.234.
; Sets the value of the R parameter to the value of the first
component of setup offset 1 for cutting edge (d) on tool
(t).
; Sets the value of the R parameter to the value of the last
component of setup offset 1 for cutting edge (d) on tool
(t).
Detailed Description
2.9 Sum offsets and setup offsets
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