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PLC project
July 2013
You must keep the following in mind to make sure that the data is transferred
to the PLCE partition (with the PLC:\_mpupdate\plce.zip file) during a
software update:
The password for the PLCE partition is stored in the SIK or OEM.SYS in the
control.
The password in the control matches the password in plce.zip.
The PLCE partition exists and is mounted (Mount).
The PLCE partition offers sufficient storage space for the new data.
Automatic binary-to-ASCII conversion is not possible for the encrypted PLCE
partition during a software update. This means that you must manually convert
binary-coded files on the PLCE partition to ASCII format before a software
update. After the software update, the files must be reconverted back to the
binary format. To convert the files manually, proceed as follows:
Switch to the Machine Parameter Programming mode of operation.
Press the MOD key and then the UPDATE DATA soft key.
Use the CONVERT BIN -> ASC soft key to convert the files to ASCII format
before a software update. Use the CONVERT ASC -> BIN soft key to convert
the files back to binary format after the software update.
In order to avoid converting the files manually, you could also load the binary-
coded files onto the PLCE partition after a software update.
A plce.sys file can be stored in the PLC:\_mpupdate directory. In this file, you
can save the information for creating an encrypted PLCE: drive in the following
form:
CREATE -s=<size> -p=<Password> [-oemsys] [-force]
This enables the PLC project to create the PLCE partition automatically. You
no longer need to create the PLCE partition manually before loading the PLC
project. Where:
<size>
Size of the drive to be created (in megabytes between 1 MB to 100 MB)
<Password>
Encryption password, this password can also be in encrypted form: For
example, if a password for an encrypted drive has been created manually,
saved in OEM.SYS and then copied from OEM.SYS. The password must be
between 12 and 21 characters long.
[-oemsys]
If this option is set, the password will be saved in OEM.SYS. If the option is
not set, it will be saved in the SIK.
[-force]
If this option is set, an existing encrypted drive will be overwritten. If the
option is not set, it will not be overwritten.
Examples:
CREATE -s=1 -p=VeryLongPassword -oemsys
CREATE -s=80 -p=ShortPassword -force
9.3 Hard-Disk Organization
1693
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