ISPSoft User Manual

ISPSoft User Manual
code is uploaded. Owing to the fact that a POU password protects the source code in a POU, the
POUs transformed from the object code are not protected by POU passwords. Users can open the
POUs of the function block type at will, and analyze the contents of the POUs.
Generally speaking, developers pack core techniques or low-level programs in function blocks. If
object code is gotten in the way described above, all the techniques may be analyzed. To prevent
this situation, the users can set a subroutine password before the project is downloaded. If the users
set a subroutine password, the subroutine password will become the POU passwords which protect
the POUs of the function block type transformed from the object code which is uploaded. As a result,
if the users want to open the POUs of the function block type, the system will ask the users to type
the correct passwords.
*. The object code in an AH500 series CPU module can not be uploaded independently, and therefore there is no
problem of information leakage, and users do not need to set a subroutine password.
15.5.2 Setting and Unlocking a Subroutine Password
After users click the Tools menu, point to Program Settings, and click Subroutine Password
Setting, the Subroutine Password Setting window will appear. The message at the bottom of the
window indicates whether the subroutine is protected by a subroutine password.
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