20
Coding of the data in the four CAN telegram types
4.1.1 Initiatedomaindownloadrequest(writerequestofthemaster)
7…0 7…0 15…8 7…0 7…0 15…8 23…16 31…24
0010nn1s
Sub
index
LSB
Data
Index
LB HB
B0 B1 B2 B3 B4 B5 B6 B7
nn: Onlyvalidwiths=1:Containsthenumberofbytesofthedataeld,thatcon-
tains no data.
s: Ifitisequal1,thennncontainsthenumberofbytesinthedataeld,thatcon-
tains no data.
Otherwise no display of the data length in nn.
Index: 16 bit (unsigned) addressing of the parameter (see above).
Subindex: 8bit(unsigned)subaddressingforcomplexparametersandthedirectset-ad-
dressing.
Data: Datatobetransmitted.TheLSbyteistransmittedrst.
4.1.2 Initiatedomainuploadrequest(readrequestofthemaster)
7…0 7…0 15…8 7…0
01000000
Sub
index
reserved
Index
LB HB
B0 B1 B2 B3 B4 B5 B6 B7
Index: 16 bit (unsigned) addressing of the parameter (see above).
Subindex: 8bit(unsigned)subaddressingforcomplexparametersandthedirectset-ad-
dressing.
4.2 SDO(tx)telegram
4.2.1 Initiatedomaindownloadresponse(writeconrmationfromtheFI)
ThisresponseistransmittedbytheG6CANcontrol,iftherequestedwriteservicewasexe-
cuted error-free.
Index: see
above
7…0 7…0 15…8 7…0
Subindex:
see
above
01100000
Sub
index
reserved
Index
LB HB
B0 B1 B2 B3 B4 B5 B6 B7