Detailed description
2.7 Structure and functions of the basic program
Basic logic functions: PLC Basic program powerline (P3 pl)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
57
Concurrent axes
The distinguishing features of concurrent axes are as follows:
• They can be traversed either from the PLC or from the NC.
• They can be started from a function call on the PLC in all operating modes.
• The start is independent of NC block boundaries.
Function calls are available for positioning (FC 15) and indexing axes (FC 16).
3RV$[
3DUW$[
(UURU
6WDUW(UU
$FWLYH
,Q3RV
)5DWH
3RV
0LQXV
3OXV
'&
,&
$[LV1R
6WDUW
)&
(UURU
6WDUW(UU
$FWLYH
,Q3RV
)5DWH
3RV
+:KHHO2Y
,QFK
,&
$[LV1R
6WDUW
)&
,QSXW
SDUDPHWHUV
2XWSXW
SDUDPHWHUV
ASUBs
Asynchronous subprograms (ASUBs) can be used to activate any selected function in the
NC. Before an asynchronous subprogram can be started from the PLC, it must be ensured
that it is available and prepared by the NC program or by FB 4 PI services (ASUB). ASUBs
can only be started in MDA or Automatic mode with running parts program.
Once prepared in this way, it can be started at any time from the PLC. The NC program
running on the channel in question is interrupted by the asynchronous subprogram. The
asynchronous subprogram is started by FC 9.
)&
6WDUW
&KDQ1R
,QW1R
$FWLY
'RQH
(UURU
6WDUW(UU
5HI
$683
Note
If an asynchronous subprogram has not been prepared by an NC program or by FB 4
(ASUB) (e.g., if no interrupt no. has been assigned), a start error is output.
To Next Page
Loading...
Need help?
General
