Owner's manual

4-24 Chapter 4: OE2CIH and HART
User’s Manual Pub. 0300272-01 Rev. A.0
Request Succeeded Reply
HART Get Device Information - Reply packet structure
Reply Size = 120 bytes
Offset
Field
Value
Definition
112 to
115
DampingValue
(4 bytes–Float)
CMD#15, Bytes 11-14
116
WriteProtectCode
(1 byte)
CMD#15, Byte 15
117
Pad_2 for alignment
(1 byte)
118 to
119
PrivateLabelMfg16Bit
(2 bytes)
CMD#0, Byte 1 if HART Rev earlier
than 7
CMD#0, Bytes 19-20 if HART Rev
greater than or equal to 7
Table 4-16 Ladder Pass-through Init (Service Code = 0×4E)
Unconnected Message
Field
Value
Definition
Message Type
CIP Generic
Service Code
0×4E
Pass-through Init
Class Name
0×035D
HART Object
Instance
1 to n
Selects channel n-1
Object Attribute
None, leave this field blank
Request Size
2 to 257 bytes
HART Data and Command
Reply Size
4 bytes
Number of Data bytes returned
Request Data
HART Ladder Passthrough Init - Request packet structure
Request Size = 2 to 257 bytes
Offset
Field
Value
Definition
0
HART Command
0 to 255 (1 byte)
HART Command Number
1
HART Data Size
0 to 255 (1 byte)
Number of Data bytes for selected
HART command
2 to
256
HART Data bytes
0 to 255 (1 byte)
HART command data