Siemens SINUMERIK 840Di Function Manual page 1088

Detailed description
2.12 Block descriptions
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. Machine data 20310 bit 12 must not be set to 1 for circular
magazines.
Manual revolver switching
If a manual action is used to rotate the revolver, this information must be forwarded to the
tool management. The asynchronous transfer function of FC 8 must be used to transfer the
modified positions of the revolver. This must only occur once on the first manual rotation in
the sequence. In this case, the following parameterization of the asynchronous transfer is
needed via FC 8:
TaskIdent = 4
TaskIdentNo = Channel
NewToolMag = Magazine number of the revolver
NewToolLoc = Original location of the tool
OldToolMag = Magazine no. buffer storage (spindle) = 9998
OldToolLoc = Buffer storage number of the spindle
Status = 1
This action also causes the same T command to be resent to the tool-management interface
if the previous T is programmed again.
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Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0