Siemens SINUMERIK 840D sl Function Manual page 1460

Detailed description
2.12 Block descriptions
2.12.15 FC 8: TM_TRANS transfer block for tool management
Description of Functions
The user calls this block FC TM-TRANS when the position of the tool or the status of the
transfer operation changes. The parameter "TaskIdent" specifies the transfer job for the
block FC 8 at the tool management interface:
1. For loading/unloading positions,
2. For spindle change positions,
3. For revolver change positions as transfer identifier
4. Asynchronous transfer,
5. Asynchronous transfer with location reservation
The interface number is indicated in parameter "TaskIdentNo".
Example for loading point 5:
Parameter "TaskIdent":= 1 and "TaskIdentNo":= 5.
Furthermore, the current tool positions and status data (list of "Status" parameter in the
following text) are also transmitted for this transfer function.
Note
FC8 informs the NCK of the current positions of the old tool.
The NCK knows where the old and the new tool have been located until the position change.
In the case of a transfer without a socalled "old tool" (e.g., on loading), the value 0 is
assigned to parameters "OldToolMag", "OldToolLoc".
Block FC TM_TRANS may be started only with "Start" parameter = "TRUE" if an activation
signal for the appropriate interface (DB 71, DB 72, DB 73 in word 0) for this transfer has
been supplied by the tool management function.
Output parameter "Ready" is set to the value TRUE when the job has been executed
correctly.
The user must then set the
"Start" parameter to FALSE
or not call the block again.
If the
"Ready" parameter = FALSE,
the error code in the
"Error" parameter must be interpreted (see Call example FC 8 and timing diagram).
If the error code = 0, then this job must be repeated in the next PLC cycle (e.g., "Start"
remains set to "TRUE"). This means that the transfer operation has not yet been completed.
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Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0