30 – 572 HEIDENHAIN Service Manual iTNC 530
30.2 The Machine Parameter Editor
Important notes For service purposes, the service technician must not only look up values set in the MP list, but
he must also be able to edit them, if required. The MP list is protected against unauthorized
editing with a code number.
Please note the following:
Changes by the
operator
The machine operator may change the machine settings.
He will mostly increase the security, e.g., he can reduce the traverse range or the maximum
speed.
But only the values in the run-time memory are overwritten. The values of the original MP list on
the control's hard disk do not change!
Subgroups of the
MP list
It is also possible to call subgroups of the original MP list:
Changes by the PLC The PLC program of the machine manufacturer can read machine parameters and overwrite
most of them!
But normally only the values in the run-time memory are overwritten. The values of the original
MP list on the control's hard disk do not change!
Another MP file (that of course must exist on the control's hard disk) can also be selected by
means of the PLC.
MP subfiles (subgroups of the original MP file, sometimes with different values) can also be
activated by the PLC. The MP subfile content is loaded into the process memory. All MP values
that are not in this file remain unchanged.
Machine parameters may only be changed after consultation with the machine
manufacturer.
(for this reason many OEMs also determine their own MP code numbers)
Only edit machine parameters while the control is in "power interrupted" status or if
EMERGENCY STOP is pressed.
Machine parameters that concern the control loops may only be edited when
EMERGENCY STOP is pressed!
Extensive changes should be made in a test MP list and not in the original MP list.
It is advisable to create a backup of the machine data on an external data medium, if you
intend to make comprehensive changes to the machine settings. --
--> See “Backup on an External Data Medium” on page 13 – 192.
Call Contents
USER PARAMETER soft key Up to 16 parameters which have been released by the
machine manufacturer
Code number 123 Parameters defined by HEIDENHAIN
So it is possible that the values in the original MP list (basic data) are not valid at any rate.
It is possible that values in the MP list have been changed for testing purposes; with
special machine functions, however, these values are overwritten in the run-time
memory by the PLC!
If necessary, ask the machine manufacturer which MP files or MP subfiles are active in which
special mode of the machine, or which parameters are overwritten by the PLC!
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