Emerson Fisher FIELDVUE DVC5000 Instruction Manual Supplement page 11

Instruction Manual Supplement
D103266X012
Command 3: Read Dynamic Variables and Loop Current
This command is used to read the value of Loop Current and the four Dynamic Variables.
The default Dynamic Variable assignment and the Variable Units Codes are shown on page 6.
Byte
Request
none
Data Bytes
0­3
4
5­8
9
Response
10­13
Data Bytes
14
15­18
19
20­23
Code
Command­
Specific
8
Response
Codes
Command 14: Read Primary Variable Transducer Information
Note
The Transducer Serial Number is not applicable to the DVC5000 and is set to "0".
Byte
Request
None
Data bytes
0­2
3
Response
Data
4­7
Bytes
8­11
12­15
Code
Response
None
Codes
Format Description
Float Loop Current (implied units of "mA")
Byte, hex Primary Variable (PV) units code
Float Primary Variable (PV) value
Byte, hex Secondary Variable (SV) units code
Float Secondary Variable (SV) value
Byte, hex Tertiary Variable (TV) units code
Float Tertiary Variable (TV) value
Byte, hex Fourth Variable (FV or QV) units code
Float Fourth Variable (FV or QV) value
Class Description
Warning – Value read invalid (one of the variables is out of range)
Format Description
UINT24 Transducer Serial Number
Transducer Limits and
Enum Minimum Span Units
Code
Float Upper Transducer Limit
Float Lower Transducer Limit
Float Minimum Span
Class Description
DVC5000 Digital Valve Controller
Returned Value
Device Revision 2
000000 000000
39 (mA) 250 (Not Used)
41C00000 7FA00000 (Not A Number NAN)
00000000 7FA00000 (Not A Number NAN)
40800000 7FA00000 (Not A Number NAN)
May 2018
Device Revision 3
11