ProSoft Technology MVI69-HART - Manual (Page 38)

Module Configuration MVI69-HART ♦ CompactLogix Platform
User Manual HART Multi-drop Master Communication Module
Page 38 of 169 ProSoft Technology, Inc.
March 29, 2012
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.
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)
Short Address
0 = Point-to-Point
1 to 15 = Multi-drop
This parameter specifies the HART slave node address on the network to which
the command will be sent. Values of 0, or 1 to 15 are permitted. 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.
Function Code
0 to 255
This parameter specifies the HART function to be executed. Any HART function
can be executed, even device specific ones, but only supported commands will
return formatted data and classified in floating point data and integer data.