Siemens SINUMERIK 840Di Function Manual page 509

Miscellaneous
Only the M help functions are group-specifically displayed. Additionally, block-by-block
display is still possible as before. Up to 15 groups can be displayed whereby per group only
the last M function of a group—either collected or output to the PLC—is displayed. The M
functions are displayed in various display types according to their status:
States and their display
Status
The last help function of the group
is displayed
Help function collected
Help function output from NCK to
PLC
Help function transferred from NCK
to PLC and transfer
acknowledgement executed
Help function managed by PLC
and taken over directly by PLC
Help function managed by PLC
and function acknowledgement
executed
Display updating
The display is organized in such a way that first of all the collected help functions are
displayed before the PLC-managed and the NCK-managed functions. A collected help
function remains marked as collected until transferred from the NCK to the PLC. PLC-
managed help functions remain until replaced by another help function. In the case of
RESET, only the collected and NCK-managed functions are deleted.
Auxiliary Function Output to PLC (H2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.13 Querying and displaying of output M help functions
Display type
Inverted in yellow typeface
Inverted
Black typeface on gray background
Black typeface on gray background
Black typeface on gray background
Detailed Description
2-35