Contents XPS/XPS-E User's Manual
20 COMSOFT
TE
S 0 0
1
STDAT
EN
EN
S 1 2
TE
S 2 5
STDAT
S 2 5
STDAT
2
3
3
DP-Master Receive Buffer
XPS/XPS-E
DATA_EXCHANGE.REQ
DATA_EXCHANGE.RES
S = Status
PROFIBUS Data Traffic
XPS/XPS-E
EN
EN
S 2 5
S 2 5
STDAT
3
4
S 3 2
EN
4
EN
EN
STDAT
Figure 6: Data Reception in Request Mode
The data_exchange.req telegram is sent to the XPS/XPS-E which
already has received the first characters. It returns them, however, only in
the subsequent response telegram
data_exchange.res.
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General