API
functions
3
5
3
API functions
The programming interface is based on the backplane bus device driver and provides
an interface for the transmission/reception of process data (PDOs) and configuration
data (SDOs).
By means of this interface, a cyclic thread is created, copying the process data from/to
the I/O modules. The grouping for the customer application interface is simplified, so
that there only is one group. During transmission this group contains all output data,
and during reception it contains all input data.
3.1
Functions of the interface DLL
The following functions are provided:
Function
Description
BpbApiOpen
Log on application on application interface
BpbApiClose
Log off application on application interface
BpbApiGetVersion
Returns the version
BpbApiGetStates
Read out status of the backplane bus (BPB)
BpbApiResetBpb
Carries out a reset on the BPB controller
BpbApiGetError
Read last error message of the BPB
BpbApiResetError
Resets the error memory in the BPB controller
BpbApiReadSdo
Reading out the input buffer
BpbApiWriteSdo
Writing to the output buffer
BpbApiSetOperational
Starts free-running BPB operation
BpbApiReadPdo
Imports the process image
BpbApiWritePdo
Writes the process image
In the following the functions listed above are specified.
