ABB FPBA-01 PROFIBUS DP - PROFIBUS SD2 Telegram for SAP 51

Communication protocol 153
PROFIBUS SD2 telegram for SAP 51
The read/write service uses a variable-length PROFIBUS SD2
telegram shown below.
DP header DP trailer
SD LE LEr SD DA SA FC DSAP SSAP DU FCS ED
68h x x 68h xx xx x xx xx x… xx 16h
SD = Start delimiter
LE = Length
LEr = Length repeated
DA = Destination address
SA = Source address
FC = Function code
DSAP = Destination service access point
SSAP = Source service access point
DU = Data unit for DP services
FCS = Frame checking sequence
ED = End delimiter
Data unit
DP-V1
Command/Response
PROFIdrive V3 Parameter Channel
DU0 DU1 DU2 DU3 Request/Response header
(See the tables on pages 156
and 158.)
Data
Byte Meaning Value
DU0 Function number See page
154.
DU1 Slot number 0 = Module itself
1 = Drive parameter access
DU2 Index 47 (0x2F)
DU3 Data length (Depends on type of
message)
DU4…DUn PROFIdrive data