12
HART add-on module
8. Universal Commands
8. Universal
Commands
Command Number Data in Command Data in Response
and Funktion
0 Read unique identifier None Byte 0 "254" (expansion)
Byte 1 Manufacturer ID
Byte 2 Mfr. device. Type
Byte 3 Number of preamble
Byte 4 Universal Command
revision
Byte 5 transmitter specific
command revision
Byte 6 software revision
Byte 7 hardware revision
Byte 8 device function flag
Byte -11 Device ID number
1 Read primary variable None Byte 0 PV unit code
Byte 1-4 Primary variable
2 Read Current & None Byte 0-3 current (mA)
% of range Byte 4-7 % of range
3 Read Current & None Byte 0-3 Current
four variables Byte 4 PV unit code
Byte 5-7 PV
Byte 9 SV unit code
Byte 10-13 SV
Byte 14 TV unit code etc.
Byte 15-18 TV
Byte 19 QV unit code etc.
Byte 20-23 QV
6 Write polling address Byte 0 =Short address As in command
11 Read unique id Byte 0-5 As Command 0
associated with tag TAG (8 characters)
12 Read message None Byte 0-23 Message
13 Read Tag, Descriptor & None Byte 0-5 Tag
Date Byte 6-17 descriptor
Byte 18-20 date
14 Read PV sensor number None Byte 0-2 sensor serial number
Byte 3 unit code for sensor limits
and min. span
Byte 4-7 upper sensor limit
Byte 8-11 lower sensor limit
Byte 12-15 minimum span
15 Read PV output None Byte 0 alarm select code
information Byte 1 transfer code
Byte 2 Upper and lower range
values unit code
Byte 3-6 Upper range value
Byte 7-10 Lower range value
Byte 11-14 Damping value (sec)
Byte 15 Write protect code = 1
Byte 16 Private-label distributor
code
16 Read final assembly None Byte 0-2 Final assembly number
number
17 Write Message Byte 0-23 As in command
Message
18 Write tag, descriptor Byte 0-5 As in command
and date TAG
Byte 6-17
Descriptor
Byte 18-20
Date
19 Write final assembly Byte 0-2 As in command
number Final assembly number
This device supports the following Universal Commands.