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126 Rockwell Automation Publication 1756-UM533C-EN-P - February 2011
Chapter 8 Getting HART Data By Using CIP MSG
Get Device Information (Service Code = 16#4D)
These tables show the request and reply packet structures for the Get Device
Information service.
Table 37 - Request Packet
Offset Field Data Type Definition
No request data
Request size = 0 bytes
Table 38 - Reply Packet - Request Failed
Offset Field Data Type Definition
0 Status USINT Command status
1 Pad Pad byte
Reply size = 2 bytes
Table 39 - Reply Packet - Request Succeeded
Offset Field Data Type Definition
(1)
0 Status SINT Command status
1 Manufacturer ID CMD#0, Byte 1
If this byte is ≥ 16#E0, refer to byte offset 10 and 11 for the
extended manufacturer identification.
2 Device Type CMD#0, Byte 2
3 Preamble CMD#0, Byte 3
4 Universal Command
Code
CMD#0, Byte 4
5 Transducer Spec
Code
CMD#0, Byte 5
6 Software Revision CMD#0, Byte 6
7 Hardware Revision CMD#0, Byte 7
8 Flags CMD#0, Byte 8
9 Pad_1 for 16 bit
alignment
10…11 Extended
Manufacturer ID
CMD#0, Byte 1 if HART revision is < 7
CMD#0, Bytes 17…18 if HART revision is ≥ 7
12
…15 Device ID Number DINT CMD#0, Bytes 9…11
16…27 Tag HARTTag CMD#13, Bytes 0…5
See HARTTag on page 130 for more information.
28…47 Descriptor HARTDescriptor CMD#13, Bytes 6…17
See HARTDescriptor on page 130 for more information.
48 DateDay SINT CMD#13, Byte 18
49 DateMonth CMD#13, Byte 19
50…51 DateYear INT CMD#13, Byte 20 (+ 1900)
52…55 Final
AssemblyNumber
DINT CMD#16, Bytes 0…2