BECKHOFF FB1111-014x - Manual (Page 23)

Interfacing with the EL9820 Evaluation Kit
FB1111 Piggyback Controller Board 17
5 Interfacing with the EL9820 Evaluation Kit
As the FB1111 piggyback controller board variant with the sub code 0142 (32 bit In/Out digital Inter-
face) uses all available signals on the PDI connector, it can be programmed to implement the two
remaining PDIs.
Figure 5: EL9803 Adapter board – Top Side
Due to the different PDI connector pinouts in comparison with the variants 0141 and 0140 an addition-
al board is needed, that maps the physical digital PDI signals to the Microcontroller, respectively SPI,
interface of the EL9820 Evaluation Kit. Therefore the EL9803 adapter board can be used to realize all
three available PDIs on the EL9820 Evaluation Kit with just one FB1111-0142.
Figure 5 shows the top side of the EL9803 Adapter Board. The FB1111-0142 has to be placed on the
position, labelled with “FB1111” on the top most right of Figure 5. The adapter board is delivered with
spacer pins at the position, where the FB1111-0142 has to be attached at.
The EL9820 Evaluation Kit connects with the EL9803 Adapter Board from the bottom side (Figure 6)
of the of the adapter bo
ard. The holes labelled with “As uC” and “SPI” are referencing the position of
the EL9820 Evaluation Board for the desired Process Data Interface. In addition to the labelled posi-
tion holes two LEDs are placed on the board (bottom right edge of Figure 5). The left LED indicates
physical SPI mapping between EL9820 and EL9803. The right one indicates asynchronous Microcon-
troller interfacing.
Only 50 PDI signals are provided by the EL9820 Evaluation Kit in comparison to the 52 signals of the
EtherCAT piggyback controller board FB1111-0142, respectively the EL9803 Adapter Board. The
boards FB1111-0142 and EL9803 are supporting full functionality of the EtherCAT Evaluation Kit
EL9820. The additional pins will be used in future versions of the EL9820.