Learn about interface directories

All PI interface installations use a standardized directory structure as described below:

PIHOME directory tree - 32-bit Interfaces

The [PIHOME] directory tree is defined by the PIHOME entry in the pipc.ini configuration file. This pipc.ini file is an ASCII text file, which is located in the %windir% directory.

For 32-bit operating systems, a typical pipc.ini file contains the following lines:

[PIPC]
PIHOME=C:\Program Files\PIPC

For 64-bit operating systems, a typical pipc.ini file contains the following lines:

[PIPC]
PIHOME=C:\Program Files(X86)\PIPC

The above lines define the root of the PIHOME directory on the C: drive. The PIHOME directory does not need to be on the C: drive. AVEVA recommends using the paths shown above as the root PIHOME directory name.

Note: Restrict the Windows accounts that can create or write files in the %PIHOME% folder and subfolders.

PIHOME64 directory tree - 64-bit interfaces

The [PIHOME64] directory tree is defined by a System Environmental Variable called PIHOME64.

A typical value for this environmental variable is C:\Program Files\PIPC\.

The above lines define the \Program Files\PIPC directory as the root of the PIHOME64 directory tree on the C: drive. AVEVA recommends using \Program Files\PIPC as the root directory name. The PIHOME64 directory does not need to be on the C: drive.

Note: Restrict the Windows accounts that can create or write files in the %PIHOME% folder and subfolders.

Interface installation directory

The installation kit for the read/write version will automatically install the interface to: PIHOME\Interfaces\<interfacename> (where <interfacename> is the name of your actual interface).

Note: PIHOME is defined in the pipc.ini file.