Siemens SINUMERIK 840D sl Function Manual page 427

Output control
Whether an auxiliary function is output to the PLC during a type 5 block search (SERUPRO)
and/or collected on a group-specific basis in the following system variables can be configured
via bits 9 and 10 of the machine data:
● MD22080 $MC_AUXFU_PREDEF_SPEC[<n>]
(output behavior of predefined auxiliary functions)
where <n> = system function index (0 ... 32)
● MD22035 $MC_AUXFU_ASSIGN_SPEC[<n>]
(output behavior of user-defined auxiliary functions)
where <n> = auxiliary function index (0 ... 254)
● MD11110 $MN_AUXFU_GROUP_SPEC[<n>]
(output behavior of the auxiliary functions in a group)
where <n> = group index (0 ... 63)
Bit
9
10
Output counter
The user can output the collected auxiliary functions to the PLC on a channel-by-channel basis
in the block search ASUB. For the purposes of serialized output via multiple channels, the
three output counters are changed across all the channels each time an auxiliary function is
output:
System variable
$AC_AUXFU_TICK[<n>,<m>]
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Value Meaning
0 No collection during type 5 block searches (SERUPRO)
1 Collection during type 5 block searches (SERUPRO)
0 Output during type 5 block searches (SERUPRO)
1 No output during type 5 block searches (SERUPRO)
Meaning
Output counter of the active auxiliary function
Index Meaning
<n> Group index (0 to 63)
<m> Output counter (0 ... 2)
Val‐ Meaning
ue
0 Output sequence counter (all outputs within an IPO
cycle)
1 Package counter within an output sequence in the
IPO cycle
2 Auxiliary function counter within a package
H2: Auxiliary function outputs to PLC
8.13 Behavior during block search
427