Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 96)

Chapter 4
C Communicating with the Smart
Transmitter Interface
4-31
Word 09: HART hexadecimal flag assignment is 00 (low byte); most
significant byte of 24 bit device identification number is hexadecimal 00
(high byte).
Word 10: middle byte of 24 bit device identification number is
hexadecimal 15 (low byte); least significant byte is hexadecimal 11
(high byte). The 24 bit device ID is hexadecimal 001511.
Word 11: HART packet check byte received is hexadecimal 09 (low
byte); zero padding (high byte).
Table 4.P
Programmable Controller to Smart Transmitter Interface Ć BTW Data Long Frame
Format for HART Command 1
Octal Bits 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Decimal Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word 00 Smart Transmitter Interface Channel Number Smart Transmitter Interface Command
Word 01 Smart Transmitter Interface Parameter Smart Transmitter Interface Control
Word 02 HART Address HART Delimiter
Mas
Adr
0 Manufacturer
Identification Code
Lng
Frm
0 0 0 0 Frame Type
Word 03 Device ID
(Most Significant Byte)
Manufacturer's
Device Type
Word 04 Device ID
(Least Significant Byte)
Device ID
(Middle Byte)
Word 05 Byte Count HART Command
Word 06 0 0 0 0 0 0 0 0 Check Byte
Table 4.Q
Example BTW Data Offset at D9:10 Ć Long Frame Format for HART Command 1
Address 0 1 2 3 4 5 6
D9:10 0110 0000 A682 000D 1115 0001 0000
Long Frame Word Contents Ć Programmable Controller to Smart
Transmitter Interface (Offset at D9:10)
Word 00: Smart Transmitter Interface Command is hexadecimal 10 (low
byte); Smart Transmitter Interface Channel is hexadecimal 01 (high
byte).