Siemens SITRANS F US - Table 4- 1 RS-485 Connector J1; Table 4- 2 Command 0 - Read Unique Identifier; Table 4- 3 Command 1 - Read Primary Variable

HART Communications
4.1 Universal HART Commands
F US Clamp-on Communications Protocol Manual
38 Hardware Installation Manual, 11/2015, A5E34981613-AC
Table 4- 1 RS-485 Connector J1
Pin
Signal
Description
J1-1
RS-485+
No Connection
J1-2
RS-485-
No Connection
J1-3
RS-485 GND
No Connection
J1-4
N/A
No Connection
J1-5
HART
HART +
J1-6
HART
HART -
HART Commands
The following tables list the Universal HART Commands for the SITRANS F US Clamp-on
Communication Module.
Commands
Table 4- 2 Command 0 - Read Unique Identifier
Description
Byte
Response
Comments/Value
“254”
0
FE
Device Type
1-2
2Axx
Siemens FUS1010
Minimum number of Preambles
3
5
HART Protocol Major Revision Number
4
7
Device Revision Level
5
Software Revision Level
6
Hardware Revision Level 7 <5 most significant bits>
Physical Signaling Code 7 0 <3 least significant bits>
A5E31571875A
Flags
8
See Common table 11
Device ID
9-11
<unique ID for each >
Minimum number of preambles
12
Maximum number of Device Variables
13
Configuration Change Counter
14-15
<increments with each write>
Extended Field Device Status
16
See Common table 17
Manufacturer Identification Code
17-18
002A
Siemens
Private Label Distribution Code
19-20
002A
Siemens
Device Profile
21
01
Process Automation Device
Table 4- 3 Command 1 - Read Primary Variable
Description
Byte
Format
Comments/Value
Primary Variable Units
0
Enum
< write units CMD 35 or 44>
Primary Variable
1-4
Float
<select PV variable CMD 160>