Modules, Markers And Words - HEIDENHAIN iTNC 530 Service Manual

19.2.5 Checking PLC Modules, Markers and Words
For the following investigations, the PLC diagnosis functions are used.
--> See "PLC Diagnosis" on page 10 – 73.
For these PLC analyses it might be helpful or often even necessary to contact the machine
manufacturer for support.
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May 2006
Check whether the PLC module 9161 is called in the corresponding PLC program.
(ask the machine manufacturer in which program block this PLC module is called).
For this purpose enter the PLC TRACE mode.
This module serves to activate the current and speed controllers individually for each axis.
Check the value in the word W1024.
For this purpose enter the PLC TABLE.
The word W1024 contains the axes enabled by the NC.
Check the value in the word W1060 or whether the marker 4563 is set.
For this purpose enter the PLC TABLE.
The word W1060 contains the axes for which the feed rate was individually enabled
by the PLC.
If the marker M4563 is set, the PLC enables the feed rate in all axes.
(Either W1060 or M4563 is used.)
Check the value in the word W1040.
For this purpose enter the PLC TABLE.
The word W1040 contains the axes in which the control loop is opened by
the PLC (e.g., clamping axes).
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