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Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules User Manual

Page 124

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124

Rockwell Automation Publication 1756-UM533C-EN-P - February 2011

Chapter 8

Getting HART Data By Using CIP MSG

See

Appendix E on page 213

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