July 2013 9.3 Hard-Disk Organization 1689
9.3 Hard-Disk Organization
The hard disk of the iTNC is divided into three partitions:
TNC partition User-specific data such as NC programs, tool tables, datum tables, and pallet
tables.
PLC partition Your OEM-specific data such as system files, PLC programs, machine
parameters, help files, PLC dialogs, PLC error tables, compensation value
tables and OEM cycles. The PLC partition is visible only after you have entered
the code number 807667.
As a machine tool builder, you are concerned primarily with the PLC partition.
SYS partition System-specific files such as system files, NC dialogs, HEIDENHAIN cycles,
etc. The SYS partition is not visible and cannot be selected.
Size of the
partitions
HDR The following sizes are valid for the partitions on HDR hard disks for the
iTNC 530 that were delivered with the NC software 606 42x-01:
SSDR The following sizes are valid for the partitions on the SSDR solid state disk for
the iTNC 530 that were delivered with the NC software 606 42x-01:
Alterations to the system partition can impair proper function of the iTNC!
Partition Contents Size
SYS System files 2 GB (for multiple software
versions in packed format)
PLC OEM files 1 GB
TNC User files > 138 GB
Partition Contents Size
SYS System files 2 GB (for multiple software
versions in packed format)
PLC OEM files 1 GB
TNC User files > 21 GB
A single NC program can be up to 2 GB large.
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