ICP DAS USA CAN-8823 User Manual page 86

ccs
: client command specified
1: initiate download request
scs
: server command specified
3: initiate download response
n : Only valid if e = 1 and s = 1, otherwise 0. If valid, it indicates the
number of bytes in d that do not contain data. Bytes [8 -n, 7] do
not contain segment data.
e
: transfer type
0: normal transfer
1: expedited transfer
If the e=1, it means that the data of the object are equal or less
than 4 bytes, and only initiate SDO download protocol is needed.
If e=0, the download SDO protocol is necessary.
s
: size indicator
0: data set size is not indicated
1: data set size is indicated
m
: multiplexer
It represents the index/sub-index of the data to be transfer by the
SDO.
d
: data
e=0,s=0: d Is reserved for further use.
e=0,s=1: d contains the number of bytes to be downloaded, and
e=1,s=1: d contains the data of length 4-n to be downloaded, the
e=1,s=0: d contains unspecified number of bytes to be
x
: not used, always 0
reserved : reserved for further use , always 0
CAN-8x23 user's manual (Revision 3.20, Mar/08/2012) ------
byte 4 contains the least significant bit, and byte 7
contains the most significant bit.
encoding depends on the type of the data referenced
by index and sub-index.
downloaded.
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