Rockwell Automation 1756-OF8H ControlLogix HART Analog I/O Modules - Manual (Page 198)

198 Rockwell Automation Publication 1756-UM533C-EN-P - February 2011
Appendix C Additional HART Protocol Information
17 Write message 0…23 Message
(32 characters) (A) As in command
18 Write tag,
descriptor, date 0…5
6…17
18…20
Tag
(8 characters)
Descriptor
(16 characters)
Date (A)
(A)
(D)
19 Write final
assembly
number 0…2 Final assembly
number (B)
48 Read additional
device status Starting in HART
version 7, the data
in the command
could be the same
as in the reply. 0…5
6…7
8
9
10
11
12
13
14…24 Device-specific status
Operational modes
Standardized status 0
Standardized status 1
Analog channel saturated
Standardized status 2
Standardized status 3
Analog channel fixed
(4)
Device-specific status
s
(5)
x
x
x
x
x
x
x
x
x
(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 []
Table 75 - HART Universal Commands
Command Data in Command Data in Reply Contained in
No. Function Byte Data Type
(1)
Byte Data Type
(1)
Input
Tag CIP
MSG
Table 76 - Common Practice Commands
Command Data in Command Data in Reply Contained in
No. Function Byte Data Type
(6)
Byte Data Type
(6)
Input
Tag CIP
MSG
33 Read
transmitter
variables None 0
1
2…5
6
7
8…11
12
13
14…17
18
19
20…23 Transmitter variable code for slot 0
Units code for slot 0
Variable for slot 0
Transmitter variable code for slot 1
Units code for slot 1
Variable for slot 1
Transmitter variable code for slot 2
Units code for slot 2
Variable for slot 2
Transmitter variable code for slot 3
Units code for slot 3
Variable for slot 3
(7)
(F)
(F)
(F)
34 Write damping
value 0…3 Damping value
(seconds) (F) As in command (F)
35 Write range
values 0
1…4
5…8 Range units code
Upper-range value
Lower-range value
(F)
(F)
(F)
(F)