7647 datasheet(23/28 Pages) PHOENIX

Part #	7647

Description	Inline analog strain gauge input terminal,two precise inputs, 4, 6-wire connection method

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Manufacturer	PHOENIX [PHOENIX CONTACT]

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IB IL SGI 2/P-PAC

7647_en_04

PHOENIX CONTACT

23

20.2

"Analog Values" object

The elements of this object contain the analog values of the

channels in IB IL format.

Object description:

20.3

Extended Float Format for objects 0082

hex and

0083

hex

The Extended Float Format is a specially defined format. It

consists of the measured value in the float format, a status

and a unit code. The construct is defined as a Record.

Status is necessary because the float format defines no pat-

terns providing information on the status of the numerical

value.

Status corresponds to the LSB of the Inline diagnostic codes

(e.g. overrange: Status = 01, Inline diagnostic code =

8001

hex). If Status = 0, the measured value is valid.

Record structure:

"Units Code" combines the ASCII characters of the "Config

Table" in an 8-bit code.

Structure of the float format according to IEEE 754 in the bit

representation:

Some example values for conversion from floating point to

hexadecimal representation:

Object

Analog Values

Access

Read

Data type

Array of Unsigned 16

2 x 2 bytes

Index

0081

hex

Subindex

00

hex

Read all elements

01

hex

Analog value of channel 1

02

hex

Analog value of channel 2

Length

(bytes)

04

hex

Subindex 00

hex

02

hex

Subindex 01

hex to 02hex

Data

Analog values of the channels

Element

Data type

Length in

bytes

Meaning

1

Float

4

Value in the float for-

mat acc. to IEEE 754

2Unsigned 8

1

Status

3

Unsigned 8

1

Unit code

Code

Unit

57 (39

hex)

Percentage (%)

61 (3D

hex)

Kilograms (kg)

VEEE EEEE

EMMM MMMM

MMMM MMMM

SB

1 sign bit, 0: positive, 1: negative

E

8 bits exponent with offset 7F

hex

M

23 bits mantissa

Floating point

Hexadecimal representa-

tion

1.0

3F 80 00 00

10.0

41 20 00 00

1.03965528

3F 85 13 6D

- 1.0

BF 80 00 00

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7647 Datasheet(PDF) 23 Page - PHOENIX CONTACT

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