Rockwell Automation 1757-ABRIO Process Remote I/O (RIO) Communication Interface Module - Manual (Page 123)

Publication 1757-UM007D-EN-P - December 2008 121
Accessing HART Data Chapter 9
Word 0
The low byte contains 10 hex, send message to device. For more
information, see the Smart Transmitter Interface Products (HART
Protocol) User Manual, publication
1770-6.5.19 .
The high byte contains the channel number for the destination
device, minus 1. Channels are numbered from 1 to 16, so this
byte contains 0 to F hex.
Word 1
For more information, see the Smart Transmitter Interface Products
(HART Protocol) User Manual, publication
1770-6.5.19 .
Word 2
The low byte contains the HART delimiter, which should be 86
hex for an ACK with a long frame address.
The high byte contains the manufacturer ID.
Word 3
The low byte contains the manufacturer device type.
The high byte contains the device ID most significant byte.
Word 4
The low byte contains the device ID middle byte.
The high byte contains the device ID least significant byte.
Word 5
The low byte contains the HART command.
The high byte contains the number of bytes of response data to
follow, including the two HART response code bytes.
Word 6
Word 6 contains the two HART response code bytes. For more
information, see the Smart Transmitter Interface Products (HART
Protocol) User Manual, publication
1770-6.5.19 .
Words 7…
These contain any response data.