Get device info block 3 message – Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules User Manual
Page 97

Publication 1794-UM065B-EN-E - September 2010
Configure Module Messaging 85
Get Device Info Block 3 Message
Get Device Information Block 3 Message - Request Packet Structure
Field
Value
Definition
Message Type
"CIP Generic"
Service Type
Get Attribute Single
Read From Module
Service Code
0x0E
Class Name
0x7D
FLEX Module Object
Instance
1…8 (Module next to Adapter = 1)
Module Location
Object Attribute
0x89 = Channel 0 (Add 4 for next channel)
0x8D = Channel 1
0x91 = Channel 2
0x95 = Channel 3
0x99 = Channel 4
0x9D = Channel 5
0xA1 = Channel 6
0xA5 = Channel 7
Selects Channel that the
data is from
Reply Size
16 bytes
Request Size
0
Get Device Information Block 3 Message – Reply Packet Structure
Offset
(1)
Field
Value
Definition
0
Status
00 = SUCCESS
0x86 = Channel is not
HART Enabled
0x87 = No Device Found
Command status
1
Echo of Channel
0…7
Channel
2
pad
0
3
pad
0
4
PVAssignmentCode (1 byte)
CMD#50, Byte 0; Set to 0xff
if HART Cmd 50 not
supported by device
5
SVAssignmentCode (1 byte)
CMD#50, Byte 1; Set to 0xff
if HART Cmd 50 not
supported by device
6
TVAssignmentCode (1 byte)
CMD#50, Byte 2; Set to 0xff
if HART Cmd 50 not
supported by device
7
FVAssignmentCode
(1 byte)
CMD#50, Byte 3; Set to 0xff
if HART Cmd 50 not
supported by device
8
PVUnits
(1 byte)
CMD#3, Byte 4; Set to 0 if
device does not return a
value for PV.