Siemens SINUMERIK 840D sl Function Manual page 541

Miscellaneous
Only the group-specific M auxiliary functions are displayed. The block-by-block display is
also available, as before. Up to 15 groups can be displayed, whereby only the last M function
of a group that was either collected or output to the PLC is displayed for each group. The M
functions are presented in various display modes depending on their status:
Statuses and their displays
Status
The last auxiliary function of the group is displayed.
Auxiliary function is collected
Auxiliary function is output from NCK to PLC
Auxiliary function has been transferred from NCK to PLC
and transport acknowledgement has taken place
Auxiliary function is managed by the PLC and has been
directly applied by the PLC.
Auxiliary function is managed by the PLC, and the function
acknowledgement has taken place.
Display update
The display is organized in such a way that the collected auxiliary functions are always
displayed first, before those that were managed by the PLC and before those that were
managed by the NC. A collected auxiliary function is marked as collected until it has been
output from the NCK to the PLC. PLC-managed auxiliary functions are retained until they are
displaced by another auxiliary function. In the case of a reset, only the collected auxiliary
functions and the NC-managed auxiliary functions are deleted.
Basic logic functions: Auxiliary Function Output to PLC (H2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
2.13 Scan and display of output M-auxiliary functions
Display mode
Inverted with yellow font
Inverted
Black font on gray background
Black font on gray background
Black font on gray background
Detailed description
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