Method for servicing field devices of process automation technology utilizing a device-independent operating program

A method for servicing field devices of process automation technology utilizing a device-independent operating program SP running in a computer unit CU and requiring device-specific description files DD1-DD6 for accessing parameters and/or functions of field devices F1-F6, wherein the device-specific description files are called during run time of the operating program SP via a preprocessing program and are stored in the computer unit CU, comprising the steps of:

• storing first and second preprocessing programs IP1, IP2 in the computer unit CU;
• connecting the computer unit CU with the field device F1-F6 to be serviced;
• loading the device-independent operating program SP;
• selecting the field device F1-F6 to be serviced in the operating program SP;
• calling the device-specific description file DD1-DD6 of the field device F1-F6 to be serviced via the operating program SP through the preprocessing program IP1 or IP2 associated with the device-specific description file DD1-DD6;
• and
• changing parameters of the field device F1-F6 by means of the operating program SP, wherein:
• the preprocessing programs IP1, IP2 are interpreter programs;
• and
• the interpreter programs interpret the device-specific description files DD1-DD6 during run time of the operating program SP, when information from these files is required.