Specifications

Configure the Gateway HART ♦ ProLinx Gateway
Driver Manual HART Master
ProSoft Technology, Inc. Page 31 of 119
July 7, 2009
3.4 [HART PORT x COMMANDS]
The [HART PORT x COMMANDS] sections of the CFG file set the user defined
HART channel command lists. These lists poll slave devices attached to the
HART channels. The module supports numerous commands.
3.4.1 Command List Overview
The HART module uses a command list to interface with HART slave devices.
The commands in the list specify
 the slave device to be addressed
 the function to be performed (read or write)
 the registers in the internal database to be associated with the device data.
There is a separate command list for each HART channel, with up to 99
commands allowed per channel. The command list is processed from top
(command #0) to bottom.
A poll interval parameter is associated with each command to specify a minimum
delay time in seconds between the issuance of a command. For example, a poll
interval of 10 executes the command no more frequently than every 10 seconds.
Write commands have a special feature, as they can be set to execute only if the
data in the write command changes. If the register data values in the command
have not changed since the command was last issued, the command will not be
executed. If the data in the command has changed since the command was last
issued, the command will be executed. Use of this feature can lighten the load on
the HART network. In order to implement this feature, set the enable code for the
command to a value of 2.