Siemens SINUMERIK 828D Function Manual page 443

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The function determines the sequence in which the M auxiliary functions, which have been collected on a group-

specific basis, are output for the predefined M codes. The sequence is determined from the collection times

$AC_AUXFU_M_TICK[<n>] (see "Time stamp of the active M auxiliary function [Page 442]").

A particular M code is only taken into account once, even if it belongs to more than one group. If the number of

relevant M commands is less than or equal to 0, all the collected M codes are output. The number of relevant M

commands is limited to 64.

M commands for coolant output:

M7: Coolant 2 ON

M8: Coolant 1 ON

M9: Coolants 1 and 2 OFF

Group assignment:

Group 5: M7, M9

Group 6: M8, M9

Part program (section):

Program code

During block searches, the auxiliary functions are collected on the basis of specific groups. The last auxiliary

function in an auxiliary function group is output to the PLC following a block search:

If they are output in the sequence M7 → M9, no coolant is then active. However, coolant 2 would be active

during the execution of the program. Therefore, the correct output sequence for the M auxiliary functions is

determined with an ASUP which contains the predefined procedure AUXFUMSEQ(...):

Program code

DEF INT _I, _M_IN[3], _EXT_IN[3], _NUM_OUT, _M_OUT[2], _EXT_OUT[2]

_M_IN[0]=7 _EXT_IN[0]=0

_M_IN[1]=8 _EXT_IN[1]=0

_M_IN[2]=9 _EXT_IN[2]=0

AUXFUMSEQ(3,_M_IN,_EXT_IN,_NUM_OUT,_M_OUT,_EXT_OUT)

FOR _I = 0 TO _NUM_OUT-1

M[_EXT_OUT[_I]]=_M_OUT[_I]

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

H2: Auxiliary function outputs to PLC

8.13 Block-search response

Sinumerik 840d sl