Rockwell Automation 6001-F2E AB STANDARD DRIVER SFTW - Manual (Page 49)

Specifying Message Packet Commands
with Send_StdDrv()
Appendix B
B-12
Command Format
CMD FNC
SIZE
FILE ELEMENT
NUMBER
FILE
TYPE SUB–ELMT.
NUMBER DATA
244 bytes max. NUMBER
BYTE STS TNS
0F AA
Byte No.:
1 2 3,4 5 6 7 8 9 10
Table B.F
Protected Typed Logical Write with Three Address Fields
Byte Description
CMD 0F
STS Indicates the status of a message transmission
TNS A unique 16-bit transaction number. Use it to match a reply
message to its corresponding command, which contains the
same number.
FNC AA
BYTE SIZE the size of data to be written (in bytes), not including the
address fields or other overhead bytes
FILE NUMBER (or
bytes 7a-7c) Byte 7 addresses files 0-254 only. For higher addresses, byte
7a = FF expands FILE NUMBER to three bytes total. Bytes 7b
and 7c are used for expanded file address (low address byte
first)
FILE TYPE 80, 81 – Reserved
82 – Output
83 – Input
84 – Status
85 – Bit
86 – Timer
87 – Counter
88 – Control
89 – Integer
ELEMENT NUMBER
(or bytes 9a-9c) Byte 9 addresses elements 0-254 only. For higher addresses,
byte 9a = FF expands ELEMENT NUMBER to three bytes total.
Bytes 9b and 9c are used for expanded element address (low
address byte first)
SUB-ELEMENT
NUMBER (or bytes
10a-10c) Byte 10 addresses sub-elements 0-254 only. For higher
addresses, byte 10a = FF expands SUB-ELEMENT NUMBER
to three bytes total. Bytes 10b and 10c are used for expanded
sub-element address(low address byte first)
DATA Low byte first
Reply Format
CMD
4F
STS TNS EXT STS
(only if error)
Protected Typed Logical Write
with Three Address fields (File,
Element, Sub-element)