Siemens SINUMERIK 840D sl Programming Manual page 402

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Path traversing behavior

9.4 Axial leading value coupling (LEADON, LEADOF)

Create master value

As an option, master values can be generated with other self-programmed methods. The

master values generated in this way are written to and read from variables

- $AA_LEAD_SP

- $AA_LEAD_SV

Before you use these variables, the setting data $SA_LEAD_TYPE = 2 must be set.

Status of coupling

You can query the status of the coupling in the NC program with the following system

$AA_COUP_ACT[[axis]]

0: No coupling active

16: Master value coupling active

Status management for synchronized actions

Switching and coupling events are managed via real-time variables:

$AC_MARKER[i] = n

managed with:

i flag number

n status value

Master value position

Master value velocity

Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

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