Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 User Manual
Page 157
Binary Command Language
Appendix A
A-29
Description: The processor only recognizes the write block physical
command when in the shutdown mode. To put the processor into the
shutdown mode, use the shutdown command (06 hex). The following
example command block uses the shutdown command:
STX
02
ISC
04
SIZ
01
CMD
06
ETX
03
CHK
10
The response to a shutdown command is a success response code (00 hex).
Any other response indicates that the processor did not correctly receive
the transmission.
The following example command block uses the write block
physical command:
STX
02
ISC
05
SIZ
0B
CMD
08
01
20
00
01
02
DAT
00
19
05
20
01
ETX
03
CHK
80
The data bytes store:
least significant byte of the address (01 hex)
second byte of the address (20 hex)
third byte of the address (00 hex)
most significant byte of the address (01 hex)
least significant byte of the address (02 hex)
most significant byte of the address (00 hex)
least significant byte of first data word (20 hex)
most significant byte of second data word (01 hex)
The processor response to a write block physical command is the same as
the response to a write block command (see the section entitled write
block command).
After the download operation is complete, send a reset command (09 hex)
to exit the shutdown mode. The following command block uses the
reset command:
STX
02
ISC
06
SIZ
01
CMD
09
ETX
03
CHK
15
The processor does not issue any response to a reset command, so just
continue communication by sending the next command. However, the
reset command resets the sequence counts.