Parameter Assignment; Group Assignment - Siemens SINUMERIK 828D Function Manual

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In the case of auxiliary functions for which no output behavior has been defined, the following

default output behavior is active:

Bit 0 = 1: Output duration one OB1 cycle

Bit 7 = 1: Output at block end

Parameter assignment

The handling of the auxiliary functions for a block search is defined using the group assignment of an auxiliary

function. The 168 auxiliary function groups available are subdivided into predefined and user-definable groups:

Predefined groups:

User-defined groups:

Each predefined auxiliary function is assigned, as standard, to an auxiliary function group. For most pre-defined

auxiliary functions, this assignment can be changed using the following machine data:

MD22040 $MC_AUXFU_PREDEF_GROUP[<n>] (group assignment of predefined auxiliary functions)

If an auxiliary function is not assigned to any group, then a value of "0" should be entered into the machine data.

For the pre-defined auxiliary functions with the following indices <n>, the group assignment cannot be changed:

0, 1, 2, 3, 4, 22, 23, 24

1. Auxiliary function group and block search

Auxiliary functions of the 1st auxiliary function group are, for a block search, only collected,

but not output.

Basic Functions

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

H2: Auxiliary function outputs to PLC

8.2 Predefined auxiliary functions

Sinumerik 840d sl