CAN-8123/CAN-8223/CAN-8423 user’s manual (Revision 3.00, May/22/2009) ------
90
Download SDO Block Segment Protocol
scs
: server command specified
5: block download
ss
: server subcommand
0: initiate download response
c
: It indicates whether there are still more segments to be
downloaded.
0: more segments to be downloaded
1: no more segments to be downloaded , enter ‘End block
download’ phase
seqno
: sequence number of segment, 0 <
seqno
< 128
seg-data
: It is at most 7 bytes of segment data to be downloaded.
ackseq
: sequence number of last segment that was received
successfully during the last block download
If
ackseq
is set to 0, the server indicates the client that the
segment with the sequence number 1 was not received correctly
and all segments have to be retransmitted by the client.
blksize
: number of segments per block that has to be used by client for
the following block download with 0 <
blksize
< 128
x
: not used, always 0
reserved
: reserved for further use , always 0