Siemens SINUMERIK 840D sl Function Manual page 429

The global list is structured on the basis of the sequence in which the search target was found.
It is intended to be used as a system proposal for auxiliary functions to be output in the following
ASUB at the end of SERUPRO. If an auxiliary function is not to be output, the corresponding
group index is to be set to "0".
Behavior regarding spindle auxiliary functions
Following the start of the search, all the channels collect the auxiliary functions in the channel
variables on a group-specific basis. In order to perform a far-reaching restoration of the spindle
state in the SERUPRO target block using the collected auxiliary functions, the last active
auxiliary function in any group of spindle auxiliary functions must characterize the state of the
spindle in the target block. In the case of transitions in spindle states, obsolete auxiliary
functions are deleted or, if necessary, implicit auxiliary functions are entered.
All the spindle auxiliary functions from the global auxiliary function list must correspond to the
spindle states achieved in the target block to enable the auxiliary functions to be processed
when the list is output and to ensure that no alarms or unintended spindle states are requested
which could prevent the continuation of the part program.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
H2: Auxiliary function outputs to PLC
8.13 Behavior during block search
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