Siemens SINUMERIK 840D sl Function Manual page 1810

Detailed Description
2.1 Tool
This compensation is now programmed in the part program with T1, ....D17 and the data
are addressed as follows:
$TC_DP2[ 1, 17 ] = 120
$TC_DP3[ 1, 17 ] = 5.5
$TC_DPCE[ 1, 17 ] = 3
Note
If a further cutting edge has been defined for the tool, e.g., $TC_DPCE[ 1, 2 ] = 1 ; = CE, the
D-number 2 of the cutting edge 1 cannot have the same name as the D-number of the
cutting edge 3 i.e.: SETDNO( 1, 1, 17) returns the status = FALSE as return value.
DZERO - Invalidate D numbers
The activation of this command invalidates all D numbers of the tools in the TO unit. It is no
longer possible to activate a compensation until valid D numbers are again available in the
NCK. The D numbers must be reassigned using the SETDNO command.
The following tools must be defined (all with cutting edge number 1):
T1, D1
T2, D10
T3, D100
The following command is then programmed:
DZERO
If one of the compensations is now activated (e.g., with T3 D100), an alarm is generated,
because D100 is not currently defined.
The D numbers are redefined with:
SETDNO( 1, 1, 100 )
SETDNO( 2, 1, 10 )
SETDNO( 3, 1, 1 )
Note
In the event of a power failure, the DZERO command can leave the NCK in an undefined
state with reference to the D numbers. If this happens, repeat the DZERO command when the
power is restored.
Operating principle of a retooling program
22
;Cutting edge number CE
D no. of cutting edge CE=1
D no. of cutting edge CE=1
D no. of cutting edge CE=1
;T=1, cutting edge 1 receives the (new) D number 100
;T=2, cutting edge 1 receives the (old) D number 10
;T=3, cutting edge 1 receives the (new) D number 1
Basic logic functions: Tool Offset (W1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0