Allen-Bradley 1719 Ex I/O User Manual page 67

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Table 3 - HART Universal Commands
Command
Data in Command
No.
Function
Byte
3
Read current and
four (predefined)
dynamic variables
6
Write polling
0
address
11
Read unique
0...5
identifier
associated with tag
12
Read message
13
Read tag,
descriptor, date
14
Read PV sensor
information
15
Read output
information
16
Read final
assembly number
17
Write message
0...23
18
Write tag,
0...5
descriptor, date
6...17
18...20
19
Write final
0...2
assembly number
48
Read additional
device status
(1) (A) = Packed ASCII, (B) = 3-byte integer, (D) = Date, (F) = Floating Point (HART format), (H) = HART flag
(2) Bit 6 = multisensor device. Bit 1 = EEPROM control required. Bit 2 = protocol bridge device.
(3) Truncated after last supported variable.
(4) 24 bits each LSB...MSB refers to A0 #1...24.
(5) Sint []
Data in Reply
(1)
Data
Type
Byte
None
0...3
4
5...8
9
10...13
14
15...18
19
20...23
Polling address
Tag
(A)
0...11
None
0...23
0...5
6...17
18...20
0...2
3
4...7
8...11
12...15
0
1
2
3...6
7...10
11...14
15
16
None
0...2
Message
(A)
(32 characters)
Tag
(A)
(8 characters)
Descriptor
(A)
(16 characters)
Date
(D)
Final assembly number (B)
Starting in HART
0...5
version 7, the data in
6...7
the command could be
8
the same as in the
9
reply.
10
11
12
13
14...24
Rockwell Automation Publication 1719-UM001C-EN-E - August 2018
Additional HART Protocol Information
Data
Current (mA)
PV units code
Primary variable
SV units code
Secondary variable
TV units code
Third variable
FV units code
(3)
Fourth variable
As in command
Message (32 characters)
Tag (8 characters)
Descriptor (16 characters)
Date
Sensor serial number
Units code for sensor limits and min span
Upper sensor limit
Lower sensor limit
Min span
Alarm select code
Transfer function code
PV/range units code
Upper range value
Lower range value
Damping value (seconds)
Write-protect code
Private-label distributor code
Final assembly number
As in command
Device-specific status
Operational modes
Standardized status 0
Standardized status 1
Analog channel saturated
Standardized status 2
Standardized status 3
(4)
Analog channel fixed
Device-specific status
Appendix C
Contained in
(1)
Type
Input
CIP
Tag
MSG
x
x
x
x
x
x
x
x
x
x
x
x
x
(A)
x
(A)
x
(A)
x
(D)
x
(B)
(F)
(F)
(F)
x
x
x
x
(F)
x
(F)
x
(F)
(B)
x
(5)
s
x
x
x
x
x
x
x
x
x
67

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