HEIDENHAIN iTNC 530 HSCI Technical Manual page 1691

July 2013
When creating the PLCE: partition, you must specify the desired memory size
(max. 100 MB) of the encrypted partition. Because the PLCE partition saved in
the PLC:\PLCE.BIN file is a part of the PLC partition, the memory available on
the PLC partition is reduced accordingly.
Danger
When you lose the password for the PLCE: partition, the data is

permanently lost.
Deleting the PLC:\PLCE.BIN binary file leads to loss of the data on PLCE:

HEIDENHAIN does not have any possibility to access the data on the

encrypted PLCE: partition. This also applies when servicing becomes
necessary.
The data of the encrypted PLCE: partition cannot be written to the service

file.
HEIDENHAIN provides the encrypted PLC partition (PLCE) to its

customers. The encrypted PLCE partition enables the machine
manufacturer to protect data and files better because the encryption
makes it more difficult for third parties to access this information.
HEIDENHAIN points out that no data encryption method offers 100%
protection of the data, especially against access, damage or destruction
by unauthorized persons, etc. Therefore, HEIDENHAIN of course cannot
guarantee that data stored there will not be tampered with, and as a
consequence cannot assume liability for any resulting damage.
This applies to the PLCE partition of the control, as well as to the
programming station version.
If the password is stored in the control, the NC software can access the data
and files in the PLCE: partition at any time. The control can therefore run on the
PLCE partition in the same way as on the standard PLC partition.
The NC software automatically searches the PLC partition for files that it
needs during run time. If the search is not successful and a PLCE partition
exists, the search is continued in the PLCE partition.
This does not apply to the OEM.SYS file itself, or to data and files that are
called by using absolute paths (e.g. in PLC modules, OEM.SYS). The
OEM.SYS file must always be stored in the PLC partition of the control. If data
or files are called by using an absolute path, the NC software only searches
the given path for the data or files. The search is not automatically continued
in the other partition.
Note
Do not store the same files both in the PLC partition and the PLCE partition.
9.3 Hard-Disk Organization
1691