Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario Pagina 112

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Message Packet Formats
Chapter 5
5-33
File Write
This is a write command, starting address of which is either a file symbol
or a block address. This starting address must point to a file of words.
Command Packet:
TNSDST SRC CMD FNC
0F 03
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.)
TNSSTSCMD
4F
SRCDST
TNSSTSCMD
4F
SRCDST EXT
STS
Reply
Format:
(EXT STS Byte Is Optional)
B.
Format When Reporting an Error
A.
Format When Successful Execution
Physical Read
This is a read command where the starting address is a PLC-3 physical
address. It is used to upload from a PLC-3 to a computer. The destination
1775-KA module will accept this command only after the source station
has successfully transmitted a shutdown request.
Reply
Format:
(EXT STS Byte Optional)
B.
Format When Reporting an Error
TNSSTSCMD
4F
SRCDST
TNSSTSCMD
4F
SRCDST EXT
STS
A.
Format When Successful Execution
Command Format:
TNSSTSCMD
0F
SRCDST FNC
09
DATA
— Max. of 244 Bytes
or 122 W
ords
SIZEPLC-3
Physical
Address
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