Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual - Manual (Page 185)

Message Formats
Appendix A
AĆ23
Reply Format:
A. Format when the command was successfully executed
DLE SRC STX DST C
4F
S TNS
MD TS TNS DLE ETX BCC
B. Format when reporting an error
ETX
STS
DLE SRC STX DST C
4F
S TNS
MD TS TNS DLE ETX BCC
Where the extended status byte is optional.
Upload Request
From a computer you use this command to inform the 1775–KA module
that it wants to do an upload. If the module grants the upload privilege,
you may begin issuing privileged reads. (You should, however, issue a
shutdown request first.) If a different station already has the upload
privilege, the second station is denied the privilege. The function code is
6.
Command Format:
FNC DLE SRC STX DST C
0F
S TNS
MD TS TNS DLE ETX BCC
06
Reply Format:
A. Format when the command was successfully executed
DLE SRC STX DST C
4F
S TNS
MD TS TNS DLE ETX BCC