Instruction Manual Supplement
D103783X012
DVC2000 Digital Valve Controller
September 2017
19
Command 50: Read Dynamic Variable Assignments
This command returns a list of four device variable codes taken from table DVC Device Variables which are returned in
Command 3. These Dynamic Variables are fixed and control the Command 3 response, whether burst or by request.
Byte Format Description
Request
Data Bytes
None
Response
Data Bytes
0 UINT8 ID of variable returned as the first variable (PV) in Command #3
1 UINT8 ID of variable returned as the second variable (SV) in Command #3
2 UINT8 ID of variable returned as the third variable (TV) in Command #3
3 UINT8 ID of variable returned as the fourth variable (FV) in Command #3
Code Class Description
Command
Specific
Response
Codes
None
Command 54: Read Device Variable Information
Used to identify each of the Device Variables in the range of IDs 0…10 inclusive and 211. Responds with the Sensor
Serial Number, Sensor range Units, Sensor ranges, Damping Value, and Minimum Span of the selected Variable. The
Variable range values will be in the same units as the Variable Units.
Byte Format Description
Request Data
Bytes
0 Enum
Device Variable ID, this command is applicable to variables 010 or 211.
All others will return invalid selection
Response
Data Bytes
0 UINT8 Device Variable ID
13
Device Variable Sensor Serial Number, 24bit number
(NOT USED always zero)
4 UINT8 Device variable units code
58 Float Device Variable Upper Range
912 Float Device Variable Lower Range
1316 Float
Device Variable Damping Value,
(NOT USED always zero)
1720 Float Device Variable Minimum Span (NOT USED always zero)
Code Class Description
Command
Specific
Response
Codes
2 Invalid Selection
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