Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 97)

Communicating with the Smart
Transmitter Interface
Chapter 4
Communicating with the Smart Transmitter
Interface
4-32
Word 01: Smart Transmitter Interface Control is hexadecimal 00
indicating a response is required from the Smart Transmitter Interface
(low byte); Smart Transmitter Interface Parameter is hexadecimal 00
(high byte).
Word 02: HART delimiter is hexadecimal 82 indicating an STX frame
with a long frame address (low byte); HART long frame address is
hexadecimal A6 indicating primary master, and a manufacturer’s
identification code of hexadecimal 26 for Rosemount (high byte).
Word 03: Manufacturer’s device type code is hexadecimal 0D for a
3044C temperature transmitter (low byte); most significant byte of 24
bit device identification number is hexadecimal 00 (high byte).
Word 04: middle byte of 24 bit device identification number is
hexadecimal 15 (low byte); least significant byte is hexadecimal 11
(high byte).
Word 05: HART command is hexadecimal 01 (low byte); HART packet
byte count is hexadecimal 00 (high byte).
Word 06: HART packet check byte set to 0 (low byte); zero padding
(high byte).