Allen-Bradley 1794-IE8H, User Manual, Page: 106 / 146

Publication 1794-UM063A-EN-P - March 2006
C-8 Additional HART Protocol Information
11 Read unique
identifier associated
with tag 0…5 Tag (A) 0…11 As Command 0 —
12 Read message — None — 0…23 Message (32
characters) (A)
13 Read tag descriptor,
date — None — 0…5 Tag (8 characters) (A)
6…17 Descriptor (16
characters) (A)
18…20 Date (D)
14 Read PV sensor
information — None — 0…2 Sensor serial number —
3 Units code for sensor
limits and minimum
span
4…7 Upper sensor limit (F)
8…11 Lower sensor limit
12…15 Minimum span
15 Read output
information — None — 0 Alarm select code —
1 Transfer function code
2 PV/range limits code
3…6 Upper range value
7…10 Lower range value
11…14 Damping value
(seconds)
(F)
15 Write protect code
16 Private-label
distributor code
16 Read final assembly
number — None — 0…2 Final assembly
number —
17 Write message 0…23 Message (32
characters) (A) — As in command —
18 Write tag descriptor,
date 0…5 Tag (8 characters) (A) — As in command —
6…17 Descriptor (16
characters)
18…20 Date (D)
19 Write final assembly
number 0…2 Final assembly
number — — As in command —
(1)
Bit 2 = protocol bridge device.
(2)
Bit 0 = multisensor device, bit 1 = EEPROM control required.
(3)
Truncated after last supported variable.
Table C.5 Universal Commands
Command Data in Command Data in Reply
# Function Byte Data Type Byte Data Type