Rockwell-automation 1797-IE8NF FLEX Ex 8 Input Analog, HART and Noise Manuel d'utilisateur télécharger pdf (Page 30)

30 FLEX Ex 8 Input Analog, HART, and Noise Filter Analog Modules

Publication

1797-5.5 - September 2011

Cyclic HART Input Data

The HART input data holds the primary variables for the "live" HART

device, and other information gathered during the normal HART scan.

Additional "documentary" data is available through the pass through message

interface in the device information tables. Pass through messages are defined

in detail in the User Manual.

IMPORTANT

The HART Input Data for a channel may be zeroes if HART communications is

disabled for that channel. For more information on disabling HART

communications, refer to the Disable HART communications and HART

Disable functions in the Configuration Map table.

HART Input Data

Word Bit

1514131211109876543210

0 Reserved Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0

(HART Communications Status)

1 Reserved

2 Ch0 HART Field Device Status Ch0 HART Comm Status

3 Reserved Ch0 HART Loop Status

4 Ch0 HART Primary Value

(IEEE 754-1985 Single-Precision 32 bit floating point)

6 Ch0 HART Secondary Value

(IEEE 754-1985 Single-Precision 32 bit floating point)

8 Ch0 HART Tertiary Value

(IEEE 754-1985 Single-Precision 32 bit floating point)

10 Ch0 HART Fourth (Quaternary) Value

(IEEE 754-1985 Single-Precision 32 bit floating point)

12 Ch0 Secondary Value Units Code Ch0 Primary Value Units Code

13 Ch0 Fourth Value Units Code Ch0 Tertiary Value Units Code

14 Ch1 HART Field Device Status Ch1 HART Communication Status

15 Reserved Ch1 HART Loop Status

16 Ch1 HART Primary Value

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 51 52

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Rockwell-automation 1797-IE8NF FLEX Ex 8 Input Analog, HART and Noise Manuel d'utilisateur Page 30