Spectrum-controls 1734sc-IE2CH Manual de usuario descargar pdf (Pagina 69)

Appendix B: Additional HART Protocol Information B-9

User’s Manual Pub. 0300257-01 Rev. A

Command Data in Command Data in Reply Contained in

No.

Function Byte Data

Type

(6)

Byte Data

Type

(6)

Input

Tag

CIP

MSG

108

Write Burst

mode

command

number

0 Burst mode

command number

As in command

109

Burst mode

control

0 Burst mode control

code (0 = exit, 1 =

enter)

110

Read all

dynamic

variables

None 0

1…4

6…9

11…14

16…19

PV units code

PV value

SV units code

SV value

TV units code

TV value

FV units code

FV value

(F)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

0 = exit Fixed Current mode.

Truncated after last requested code.

0 = burn EEPROM, 1 = copy EEPROM to RAM.

Truncated after last requested code.

Not a number exits Fixed-output mode.

(A) = Packed ASCII, (B) = 3-byte integer, (D) = Date, (F) = Floating Point (HART format), (H) = HART flag

Truncated after last requested code.

Truncated after last requested variable.

Section B.3

HART PV, SV,

TV, and FV

Status

HART PV, SV, TV, and FV are dynamic variables that contain the values of device

variables, which are various direct or indirect process measurements performed by the

HART field device.

Some devices let a set of their internal device variables be mapped to the PV, SV, TV,

FV dynamic variables that are automatically collected in the 1734sc-IExCH Input Tag.

HART PVStatus, SVStatus, TVStatus, FVStatus are known as Device Variable Status

values. These Status values are composed of groups of bits that indicate the quality of the

associated device variable.

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 83 84

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Spectrum-controls 1734sc-IE2CH Manual de usuario Pagina 69

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