Emerson FIELDVUEDVC6200 Manual de Instruções descarregar pdf (Página 17)

Instruction Manual Supplement

D103638X012

DVC6200 SIS Digital Valve Controller

August 2014

Command 33: Read Device Variables

This command is used to read the value of up to four selected Device Variables.

The Device Variables and Variable Units Codes are listed on page 6 and 7.

Byte Format Description Allowable choices

Request

Data Bytes

0 Variable ID Variable assigned to slot #0 See Device Variable on page 6

1 Variable ID Variable assigned to slot #1 See Device Variable on page 6

2 Variable ID Variable assigned to slot #2 See Device Variable on page 6

3 Variable ID Variable assigned to slot #3 See Device Variable on page 6

Response

Data Bytes

0 Variable ID Variable assigned to slot #0

1 Byte, hex Slot #0 Variable units code

25 Float Slot #0 Variable value

6 Variable ID Variable assigned to slot #1

7 Byte, hex Slot #1 Variable units code

811 Float Slot #1 Variable value

12 Variable ID Variable assigned to slot #2

13 Byte, hex Slot #2 Variable units code

1417 Float Slot #2 Variable value

18 Variable ID Variable assigned to slot #3

19 Byte, hex Slot #3 Variable units code

2023 Float Slot #3 Variable value

Code Class Description

Command

Specific

Response

Codes

0 Success No CommandSpecific Errors

2 Error Invalid selection – Invalid Variable ID

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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Emerson FIELDVUEDVC6200 Manual de Instruções Página 17