Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules User Manual
Page 124
124
Rockwell Automation Publication 1756-UM533C-EN-P - February 2011
Chapter 8
Getting HART Data By Using CIP MSG
See
for an explanation of the engineering unit code
numbers.
Table 33 - Reply Packet - Request Succeeded
Offset
Field
Data Type
Definition
0
Status
USINT
Command status
1
HARTCommandStatus
HART Device reply Status Byte # 1 (response code)
2
HARTFieldDeviceStatus
HART Device reply Status Byte # 2
3
HARTExtDevice Status
Status Byte returned from Cmd 9 or 0 for 5.x rev HART devices
4
…
7
PV
REAL
HART Primary variable
8
…
11
SV
HART Secondary variable
12
…
15
TV
HART Third variable
16
…
19
FV
HART Fourth variable
20
PV Units
USINT
Primary variable unit code
21
SV Units
Secondary variable unit code
22
TV Units
Third variable unit code
23
FV Units
Fourth variable unit code
24
PV Assignment Code
Primary variable assignment code
25
SV Assignment Code
Secondary variable assignment code
26
TV Assignment Code
Third variable assignment code
27
FV Assignment Code
Fourth variable assignment code
28
PV Status
1 byte status from Cmd 9(Rev 6.x) or if Rev 5.x device:
16#C0 = Connected
16#00 = Not Connected
29
SV Status
1 byte status from Cmd 9 or if Rev 5.x device:
16#C0 = Connected and Device provides this value in CMD 3 (that is, does not
truncate)
16#00 = Not Connected
30
TV Status
1 byte status from Cmd 9 or if Rev 5.x device:
16#C0 = Connected and Device provides this value in CMD 3 (that is, does not
truncate)
16#00 = Not Connected
31
FV Status
1 byte status from Cmd 9 or if Rev 5.x device:
16#C0 = Connected and Device provides this value in CMD 3 (that is, does not
truncate)
16#00 = Not Connected
32
…
35
Loop Current
REAL
Device reported digital loop current value. (Value from Cmd 3 for Rev 5.x devices
or Cmd 2 if Rev 6.x device)
Reply Size = 36 bytes