Information Options; Group-Specific Modal M Auxiliary Function Display - Siemens SINUMERIK 828D Function Manual

H2: Auxiliary function outputs to PLC

8.15 Information options

8.15 Information options
Information about auxiliary functions (e.g. about the output status) is possible via:
• The group-specific modal M auxiliary function display on the user interface
• Querying system variables in part programs and synchronized actions
8.15.1

Group-specific modal M auxiliary function display

Function
The output status and acknowledgement status of M auxiliary functions can be displayed on the user interface on
a group-specific basis.
Requirements
To implement function-oriented acknowledgement and display of M auxiliary functions, the auxiliary functions
must be managed in the PLC and, thus, in the user program itself. Therefore, it is up to the PLC programmer to
program the acknowledgement of these auxiliary functions. He has to know which auxiliary functions in which
group have to be acknowledged.
Standard
M auxiliary functions that are not managed by means of the PLC are identified by the NC as "transferred" and
output to the PLC. There is no functional acknowledgement for these auxiliary functions. All M-auxiliary functions
collected after a block search are also displayed so that the operator knows which auxiliary functions will be
output after a start following a block search.
PLC activities
In the case of auxiliary function groups that are managed by the PLC itself, the PLC user program must
acknowledge all auxiliary functions of this groups when Apply and Function End are activated. The PLC
programmer must know all the auxiliary functions of these groups.
Miscellaneous
Only the group-specific M auxiliary functions are displayed. The block-by-block display is also retained. 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:
Status
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
460
Display mode
Inverted with yellow font
Inverted
Black font on gray background
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Basic Functions