Rockwell Automation 1757-ABRIO Process Remote I/O (RIO) Communication Interface Module - Manual (Page 119)

Publication 1757-UM007D-EN-P - December 2008 117
Accessing HART Data Chapter 9
HART Command Data
The contents of the message are similar to what is described in the
manual for the 1770-HT1 module, with some differences. You fill in
the HART command in the Source Element tag. When the MSG
instruction executes, the reply is stored in the Destination tag.
The following table describes the contents of the reply. More detailed
descriptions follow.
Reply Contents
Word High Byte Low Byte
0 Expected reply length, in words, 7 +
returned data Length to send, in words, 7 +
required parameters
1 Channel - 1 Interface command, usually 10
hex
2 Interface parameter, set to 0 Interface control, set to 0
3 HART address Manufacturer ID (from
HartCfg.exe) HART delimiter = 82 hex for long
frame address
4 Device ID, most significant byte Manufacturer device type, from
HartCfg.exe
5 Device ID, least significant byte Device ID, middle byte
6 Byte count, number of bytes of
parameters for the HART command HART command
… parameter data
N 0 Check byte = 0