Spectrum Controls 1734sc-IE2CH User Manual
Page 65
Appendix B: Additional HART Protocol Information
B-5
User’s Manual Pub. 0300257-01 Rev. A
Command
Data in Command
Data in Reply
Contained in
No
.
Function
Byte
Data
Type
(1)
Byte
Data
Type
(1)
Input
Tag
CIP
MSG
number
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 B-4 (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, slot 0
Units code for slot 0
Variable for slot 0
Transmitter variable code, slot 1
Units code for slot 1
Variable for slot 1
Transmitter variable code, slot 2
Units code for slot 2
Variable for slot 2
Transmitter variable code, 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)
36
Set upper-
range value
(= push
SPAN
button)
None
None
37
Set lower-
range value
(= push
ZERO
button)
38
Reset
‘configurati
on
changed’
flag
39
EEPROM
control
0
EEPROM control
code(3)
As
in
command
40
Enter/exit
Fixed
Current
mode
0…3
(1)
Current (mA)
(F)
As in command
41
Perform
device self-
test
None
None