Siemens SINUMERIK 840D sl Function Manual page 1456

Detailed description
2.12 Block descriptions
2.12.14 FC 7: TM_REV Transfer block for tool change with revolver
Description of Functions
After a revolver has been changed, the user will call this block FC TM_REV. The revolver
number (corresponding to interface number in DB 73) must be specified in parameter
"ChgdRevNo" for this purpose. As this block is called, the associated "Interface active" bit in
data block DB 73, word 0 of FC 7 is reset after parameter "Ready" := TRUE is returned.
Block FC TM_REV may be started (with "Start" parameter = "TRUE") only if an activation
signal for the appropriate interface (DB 73, 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 is set to FALSE,
the error code in the
"Error" parameter must be interpreted.
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 job has not yet been completed (see
example FC 7 call and timing diagram).
The "Start" parameter does not need a signal edge for a subsequent job.
Warning
It is not permissible to abort the transfer (e.g., by an external signal RESET). The "Start"
parameter must always retain the 1 signal until the "Ready" and/or "Error" parameters <> 0.
An error code <> 0 indicates incorrect parameterization.
Note
For further details on tool management (also with regard to PLC) refer to the Description of
Functions Tool Management. In addition, PI services for tool management via FB 4, FC 8
and FC 22 are available.
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Basic logic functions: PLC basic program solution line (P3 sl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0