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6.3
APPENDIX F
HART COMMUNICATION
Digital communication with the LS2000 is necessary to monitor internal status and to modify the
factory settings. This appendix provides guidance on establishing HART communication, and
describes the communication menu structure when using the LS2000 with the HART Handheld
Communicator.
INTERCONNECTING THE HART COMMUNICATOR WITH THE LS2000
Connect the HART Communicator to the LS2000. Press the “on” key to switch on the HART
Communicator. The Online menu is the first menu to appear when the Communicator is properly
connected to the LS2000. This menu is structured to provide important information about the
connected device immediately on powering up the Communicator. This menu displays up-to-date
device information including primary variable, analog output, lower range value, and upper range
value.
NOTE
The HART protocol incorporates a concept called the “Device Description Language” that
enables all suppliers of HART instruments to define and document their products in a single
consistent format. This format is readable by handheld communicators, PC’s and other process
interface devices that support DDL. DDL enables full interoperability of devices, regardless of
manufacturer, allowing full functionality from any HART device.
In the event that your Communicator does not establish communications with the LS2000, you may
need to ensure that the appropriate DDLs for the LS2000 are included within your Communicator. To
review the device descriptions programmed into your HART Communicator:
1. From the Main menu, press to access Offline menu.
2. From the Offline menu, press New Configurations to access the list of device descriptions
programmed into your HART Communicator. The Manufacturer menu displays a list of each
manufacturer with device descriptions currently installed in your Communicator’s Memory Module.
The standard 12 MB Memory Module is recommended, as it allows for more device descriptions.
3. Select a manufacturer, and the Model menu displays, containing a list of currently installed device
models provided by the selected manufacturer.
4. Review the different manufacturers and models to determine the installed HART-compatible
devices in your Communicator.
If you cannot find the LS2000 device on your Communicator, the device revision you are looking for is
not programmed into the Memory Module. In this instance, you are limited to what is available using
the generic interface built into your HART Communicator.
The HART Communication Foundation (www.ccsi.com/hart) manages a library of Manufacturer
Device Descriptions, which are distributed to programming sites for inclusion in master devices. A
complete listing of the HCF DD Library is available for download in manufacturer and device type
sequence.
NOTE
If a device is found, the HART Communicator displays the Online menu. If no device is found,
the Communicator displays the Main menu. If no device is found, check the connections, verify
the presence of a minimum of 250 ohms load resistance in series in the loop, and retry by
selecting ‘Online.’ To poll multiple devices in the loop, refer to the HART Communicator manual.