Emerson FIELDVUEDVC6200 Instrukcja Obsługi Pobierz pdf (Strona 22)

Instruction Manual Supplement

D103638X012

DVC6200 SIS Digital Valve Controller

August 2014

Command 54: Read Device Variable Information

This command is used to identify each of the Device Variables, in the range of IDs 0…10 inclusive. 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.

Items marked by “*” are only supported in HART 7 mode.

Byte Format Description

Request Data

Bytes

0 Enum

Device Variable ID, this command is applicable to variables 010. All

others will return invalid selection

Response

Data Bytes

0 UINT8 Device Variable ID

13

Device Variable Sensor Serial Number, 24bit number

(NOT USED  always zero)

4 UINT8 Device variable units code

58 Float Device Variable Upper Range

912 Float Device Variable Lower Range

1316 Float

Device Variable Damping Value,

(NOT USED  always zero)

1720 Float Device Variable Minimum Span (NOT USED  always zero)

*21 UINT8 Device Variable Classification

*22 UINT8 Family Code (NOT USED – always 250)

*2326 Time Update period in 1/23 of a millisecond

Code Class Description

Command

Specific

Response

Codes

0 Success No CommandSpecific Errors

2 Error Invalid Selection

Device-Specific Commands

The DVC6200 SIS field device supports devicespecific commands. However, these devicespecific commands require

use of the ValveLink software application or DD methods and cannot be utilized outside of those controlled

environments.

Performance

Refer to the DVC6200 SIS Digital Valve Controller Instruction Manual (D103557X012) and Product Bulletin

62.1:DVC6200 SIS (D103555X012) for details on DVC6200 SIS performance.

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