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Overview of the DP Base Interface
DP Base Programming Interface for CP 5613/CP 5614
38
C79000-G8976-C108-01
3.1 Functions and Data
Basic Structure of the DP Base Interface
The interface to the user program is implemented with two mechanisms, as follows:
x
Interface calls of the dp_base.dll or dps_base.dll
x
Direct access to the process image on the CP 5613/CP 5614
The schematic below shows you an overview.
CP 5613/CP 5614
DP user program
Process image
dp_base.dll
dps_base.dll
Drivers
C pointer
Functions of the dp_base.dll and dps_base.dll
Your user program can execute administrative tasks and make use of less
commonly required communication properties of the CP 5613 and CP 5614 by
calling functions in the DP DLLs dp_base.dll and dps_base.dll.
Functions that begin with "DP_" have general and master module functionality.
Functions that are only relevant for the slave module begin with "dps_" (the s
stands for slave module).
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