CAN-8123/CAN-8223/CAN-8423 user’s manual (Revision 3.00, May/22/2009) ------
91
End SDO Block Download Protocol
ccs
: client command specified.
6: block download
scs
: server command specified.
5: block download
cs
: client subcommand
1: end block download request
ss
: server subcommand
1: end block download response
n
: It indicates the number of bytes in the last segment of the last
block that do not contain data. Bytes [8-
n,
7] do not contain
segment data.
crc
: 16 bit Cyclic Redundancy Checksum (CRC) for the whole data
set.
The algorithm for generating the CRC is as follows.
x^16+x^12+x^5+1
CRC is only valid if in Initiate Block Download cc and sc are set
to 1. Otherwise, crc has to be set to 0. For
CAN-8123/CAN-8223/CAN-8423, it is not support CRC check
mechanism.
X
: not used, always 0
reserved
: reserved for further use , always 0