Hart Software Lock; Verify Configuration; Using Field Communicator - Emerson Rosemount 644 HART Reference Manual

Reference Manual
00809-0100-4728, Rev MB
by the factory or using the Field Communicator.The values to which the transmitter drives its output in
failure mode depend on whether it is configured to standard, NAMUR-compliant, or custom operation.
See "Hardware and Software Failure Mode" on page 108
parameters.
2.4.5

HART software Lock

The HART Software Lock prevents changes to the transmitter configuration from all sources; all changes
requested via HART by the Field Communicator, AMS Device Manager or the LOI will be rejected. The
HART Lock can only be set via HART communication, and is only available in HART Revision 7 mode. The
HART Lock can be enabled or disabled with a Field Communicator or AMS Device Manager.
Configuring HART lock using a Field Communicator
From the HOME screen, enter the Fast Key sequence
Device Dashboard Fast Keys
Configuring HART lock using AMS Device Manager
1. Right click on the device and select Configure.
2. Under Manual Setup select the Security tab.
3. Click Lock/Unlock button under HART Lock (Software) and follow the screen prompts.
2.5

Verify configuration

It is recommended that various configuration parameters are verified prior to installation into the
process. The various parameters are detailed out for each configuration tool. Depending on what
configuration tool(s) are available follow the steps listed relevant to each tool.
2.5.1

Using Field Communicator

Configuration parameters listed in
prior to transmitter installation. A full list of configuration parameters that can be reviewed and
configured using a Field Communicator are located in
Fast Keys. A Rosemount 644 Device Descriptor (DD) must be installed on the Field Communicator to

verify configuration.

1. Verify device configuration using Fast Key sequences in
a. From the HOME screen, enter the Fast Key sequences listed in
Configuration
for standard and NAMUR-compliant operation
Figure 2-4 below are the basic parameters that should be reviewed
Appendix C: Field Communicator Menu Trees and
Figure
Configuration
3, 2, 1
2-4.
Figure 2-4.
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