Use attached layout file and copy it under \Flash2 disk in a folder of your choice, for example windows if permament tweak is applied. And then add following keys using either PHM/Tascal/Cecmd registry editor:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Layouts\00000407]
"Layout File"="\Flash2\windows\Kbd8042Ger.dll"
"Layout Text"="German"
"PS2_AT"="\Flash2\windows\Kbd8042Ger.dll"
; Please choose a preload key number appropriate for the target device.
[HKEY_CURRENT_USER\Keyboard Layout\Preload\2]
@="00000407"
From file:CE5_KeyboardLayouts.zip\ARMv4i\KbdGerman\PS2\Kbd8042Ger.dll
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Source: Beckoff.com
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Layouts\00000407]
"Layout File"="\Flash2\windows\Kbd8042Ger.dll"
"Layout Text"="German"
"PS2_AT"="\Flash2\windows\Kbd8042Ger.dll"
; Please choose a preload key number appropriate for the target device.
[HKEY_CURRENT_USER\Keyboard Layout\Preload\2]
@="00000407"
From file:CE5_KeyboardLayouts.zip\ARMv4i\KbdGerman\PS2\Kbd8042Ger.dll
[You must be registered and logged in to see this link.]
Source: Beckoff.com