Siemens SINUMERIK 840Di sl Function Manual page 64

Detailed description
2.4 Actions in synchronized actions
Example
De-selecting the online tool length offset
N10 TRAORI
N20 TOFFON(X)
N30 WHEN TRUE DO $AA_TOFF[X] = 10
G4 F5
...
N80 TOFFOF(X)
N90 TRAFOOF
Activating and de-activating in the part program
The online tool length offset is activated in the part program with TOFFON( ) and deactivated
with TOFFOF( ). When activating for the particular offset direction, an offset value can be
specified, e.g. TOFFON(Z, 25), which is then immediately moved through.
During a compensatory movement, the VDI signal NCK → PLC NST "TOFF- motion active" is
set to 1:
DB21, ... DBX318.3 (TOFF movement active)
After de-selection, the NST "TOFF active" is set to 0:
DB21, ... DBX318.2 (TOFF active).
Note
The online tool length offset remains inactive until it is re-selected using the instruction
TOFFON( ) in the part program.
Tool length offset at RESET and POWER ON
The behavior in case of RESET with Bit 0 can be set using the machine data:
MD21190 $MC_TOFF_MODE (operation of tool offset in tool axis)
The tool length offset $AA_TOFF[ ] is for MD 21190
• Bit 0 = 0: either deselected, or else is
• Bit 0 = 1: retained after RESET.
This is always necessary in case of synchronized actions IDS=number DO $AA_TOFF[n]=
value, as otherwise there would be an immediate tool length offset.
Similarly, a transformation or a die carrier with orientation capability can be deselected
afterRESET via the machine data:
MD20110 $MC_RESET_MODE_MASK (definition of initial control system settings after
RESET/TP-End)
64
; Activate orientation transformation
; Activating the function for the
; X-tool axis a
; Tool length offset = 10 is interpolated
; Positional offset of the X tool direction is deleted:
... $AA_TOFF[X] = 0 no axis is traveled,
;
for the current position in WKS the position offset
;
is calculated according to the current orientation.
;
Function Manual, 11/2006, 6FC5397-5BP10-2BA0
Synchronized actions