ProSoft Technology 5228-DFNT-HART User Manual

Page 33

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ProLinx-HART ♦ ProLinx Gateway

HART Protocol Configuration

HART Master with Analog I/O

Driver Manual

ProSoft Technology, Inc.

Page 33 of 104

October 13, 2011

3.3.4 Float DB Address

0 to 3998
This field specifies the internal database register where the floating point values returned

by the command will be placed.

3.3.5 Poll Interval

0

TO

65535

This parameter specifies the minimum interval between executions of a continuous

commands (Enable code of 1). The value is in seconds. Therefore, if a value of 10 is
entered, the command will execute no more frequently than once every 10 seconds.

3.3.6 FP Word Count

-1 to 125
This parameter specifies the number of words from the floating point data returned by a

HART command that will be placed on the Virtual Database. If this parameter is 0 no data

will be written to the Database. If this parameter is -1 then all the floating point data will

be written in the integer block of data.
Special care should be taken with this number, because is a word count and a floating

point value is 2 words long. For example if you execute a HART command 3 which takes

5 floating point values from the device, you should place a word count of 10 words.

3.3.7 Swap Code

0, 1, 2, 3
This parameter defines the byte order of each four-byte group of data received. This

parameter is helpful when dealing with floating-point or other multi-register values, as

there is no standard byte order for storing these data types. The following table describes

the values and their associated operations:

Swap Code

Description

0

None - No Change is made in the byte ordering (1234 = 1234)

1

Words - The words are swapped (1234=3412)

2

Words & Bytes - The words are swapped then the bytes in each word are

swapped (1234=4321)

3

Bytes - The bytes in each word are swapped (1234=2143)

3.3.8 Short Address

0 = Point-to-Point Mode (only)
This parameter specifies the HART slave node address on the network to which the

command will be sent. Since the Analog module supports only point-to-point mode (no

multi-point support), only the value of 0 is permitted for this parameter. If the device to be

addressed only accepts long address, then the parameter "Use Long" should be selected

so the module can ask for the long address with the short one and then execute the

command.

3.3.9 Function Code

0 to 255

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