Rockwell Automation 1770-KF2 Data Highway or Highway Plus Interface Module User Manual - Manual (Page 116)

Message Packet Formats
Chapter 5
5-37
Word Range Write
This is a write command whose starting address is either a word symbol, a
file symbol plus a word offset, or a logical address. This starting address
must point to a word in a file. The function code is 0. A special case of
this command is the single-word write, where the number of bytes to read
is only one word long.
Command Format:
TNS DST SRC CMD 00 00 FNC
0F 00
PACKET
OFFSET TOTAL
TRANS ASCII SYMBOL
(8 CHARS. MAX.) DATA — MAX. OF 228 BYTES OR 114 WORDS W/F
00
TNS DST SRC CMD FNC
0F 00
PACKET
OFFSET TOTAL
TRANS PLC-3 LOGICAL ADDRESS
(2-51 Bytes) DATA — Max. length is 239 bytes minus the length of the PLC–3 logical address. STS
(Must be an even number of bytes.)
TNS STS CMD
4F
SRC DST
TNS STS CMD
4F
SRC DST EXT
STS
Reply Format: (EXT STS Byte Is Optional)
B. Format When Reporting an Error
A. Format When Successful Execution
B. Logical Address
A. Word Symbol Address
STS
PLC-4 Commands
PLC-4 stations can execute all of the commands in the basic command
set. They can also execute the following commands, which apply only to
PLC-4 Microtrols:
Allocate Processor
Deallocate Processor
Initialize Processor
Physical Read
Physical Write
Physical Write with Mask
Set to Program Load Mode
Set to Run Mode
Set to Single-Scan Test Mode
Set to Test Mode