4-20
Chapter 4: OE2CIH and HART
User’s Manual Pub. 0300272-03 Rev. B
Request Data
HART Read Dynamic Variables - Request packet structure
Request Size = 0
Offset Field
Value
Definition
No Request Data
Request Failed Reply
HART Read Dynamic Variables - Reply packet structure
Reply Size = 2
Offset
Field
Value
Definition
0
Status
34 = DR_RUNNING
(No Device or
connection process
not completed)
35 = DR_DEAD
(Channel is not HART-
enabled)
Command status
1
Pad
0
Pad byte
Request Succeeded Reply
HART Read Dynamic Variables - Reply packet structure
Reply Size = 36 bytes
Offset Field
Value
Definition
0
Status
(1 byte)
Command status, 00 = SUCCESS
1
HART Command Status
(1 byte)
HART Device reply Status Byte # 1
2
HART Field Device
Status
(1 byte)
HART Device reply Status Byte # 2
3
HART Ext Device Status
(1 byte)
Status Byte returned from Cmd 9 or
0 for HART rev 5 devices
4-7
PV
(Float–4 bytes)
HART Primary variable
8-11
SV
(Float–4 bytes)
HART Secondary variable
12-15
TV
(Float–4 bytes)
HART Third variable
16-19
FV
(Float–4 bytes)
HART Fourth variable
20
PV Units
(1 byte)
Primary variable unit code
21
SV Units
(1 byte)
Secondary variable unit code
22
TV Units
(1 byte)
Third variable unit code
23
FV Units
(1 byte)
Fourth variable unit code
24
PV Assignment Code
(1 byte)
Primary variable assignment code
25
SV Assignment Code
(1 byte)
Secondary variable assignment
code
26
TV Assignment Code
(1 byte)
Third variable assignment code
27
FV Assignment Code
(1 byte)
Fourth variable assignment code
Содержание 1734
Страница 1: ......
Страница 6: ...vi Point IO 2 Channel Isolated Output Analog HART Module User s Manual Pub 0300272 03 Rev B ...
Страница 10: ...1 4 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Страница 13: ...Chapter 1 Module Overview 1 7 User s Manual Pub 0300272 03 Rev B See the block diagram below ...
Страница 14: ...1 8 Chapter 1 Module Overview User s Manual Pub 0300272 03 Rev B ...
Страница 24: ...2 10 Chapter 2 Installation and Wiring User s Manual Pub 0300272 03 Rev B ...
Страница 36: ...3 12 Chapter 3 Configuring the Module User s Manual Pub 0300272 03 Rev B ...
Страница 68: ...4 32 Chapter 4 OE2CIH and HART User s Manual Pub 0300272 03 Rev B ...
Страница 74: ...A 6 Appendix A Module Specifications User s Manual Pub 0300272 03 Rev B ...
Страница 76: ...I 2 Index User s Manual Pub 0300272 03 Rev B ...
Страница 77: ...User s Manual Pub 0300272 03 Rev B ...