Specifications

ProLinx Communication Gateways, Inc. 23
HART Master Protocol Drive Manual
August 17, 2004
Use Long 0 or 1 This parameter is used to define if the command will be executed with
short or long address. If the value is “0”, then the configured command will
be executed using the Short Address specified. If the value is “1” then the
specified Short Address will be used only to ask for the long address and
that will be used to execute the configured command.
Enable DB
Address
0 to 3999 This field specifies the internal database register to be used to enable the
execution of a command. This parameter is only used if “Enable” is “4” or
“5”. If the value of this database register is “-1”, then the command will be
executed, otherwise it will not. If the “Enable” value is “5”, then after the
successful execution of the command this value will become “0”
Done DB
Address
-1 to 3999 This field specifies the internal database register to be used to signal the
successful execution of a command. When a command is successfully
executed a “-1” is written to this register. This “Done DB Address” can be
shared with the “Enable DB Address” of another command to do a chained
command execution.
Write DB
Address
-1 to 3999 This field specifies the internal database register to be as a source of data
for HART command which includes data. It is possible to include data with
every HART command, but it depends of the command and of the device if
it will accept this data.
If this value is “-1”, it indicates that there will not be data with the command
or that it will not come from database.
Swap Code 0,1,2,3 This parameter is used to define if the data to be sent to a HART slave is
to be ordered differently than data that resides in the Virtual Database. Its
format is the same that the specified for the Floating Point Data Swap
Code (see above).
Byte Count 0 to 250 This parameter specifies the number of bytes to be sent to a HART device
in the command. If the command has no data then this value should be “0”.
If the value of this field is different of “0” and “Write DB Address” is different
of “-1” then the data for the command will be taken from the Virtual
Database. If the value of this field is different of “0” and “Write DB Address”
is “-1” then the data for the command will be from the “Fixed Data” field for
the command.
Fixed Data Up to 250
HEX values
separated
by space
This parameter is a string of HEX values to be sent with the HART
command. There should be at least the number of bytes specified in the
“Byte Count” parameter. The bytes should be written in hexadecimal
format and separated by a space. This data will be sent if the Parameter
“Write DB Address” is “-1” and “Byte Count” is greater than “0”, and it will
be sent in the same order that they are written.