Verify Configuration - Emerson Rosemount 644 Quick Start Manual

February 2015
Step 2: Verify configuration
Verify the configuration of the Rosemount 644 device upon receiving your
transmitter using any HART compliant configuration tool. See the Rosemount
644 Reference Manual (document number 00809-0200-4728) for configuration
instructions using AMS
The 644 communicates using the Field Communicator (communication requires
a loop resistance between 250 and 1100 ohms). Do not operate when power is
below 12 Vdc at the transmitter terminal. See the 644 Reference Manual
(document number 00809-0200-4728) and Field Communicator Reference
Manual for more information.
Verify configuration with a Field Communicator
A Rosemount 644 DD (device descriptor) must be installed on the Field
Communicator to verify the configuration. Fast Key sequences for the latest DD
are shown in
your local Emerson Process Management representative.
Perform the following steps to determine if an upgrade is required.
1. Connect the sensor (see the wiring diagram located on the device's top label).
2. Connect the bench power supply to the power terminals ("+" or "–").
3. Connect a Field Communicator to the loop across a loop resistor or at the
power/signal terminals on the transmitter.
4. The following message will appear if the communicator has a previous version
of the DDs:
Device Description Not Installed...The Device Description for manufacturer 0x26
model 0x2618 dev rev 8/9 is not installed on the System Card...see Programming
Utility for details on Device Description updates...Do you wish to proceed in forward
compatibility mode?
If this notice does not appear, the latest DD is installed. If the latest version is not
available, the communicator will communicate properly, however, when the
transmitter is configured to utilize the advanced features of the transmitter, the
user will experience trouble communicating and will be prompted to turn the
communicator off. To prevent this from happening, upgrade to the latest DD or
answer NO to the question and default to the generic transmitter functionality.
Note
Emerson recommends installing the latest DD to access the complete functionality. Visit
www.fieldcommunicator.com for information on updating the DD Library.
Field Communicator user interface
Two user interfaces are available to configure this device.
The Device Revision 8 and 9 (HART 5 and 7), DD Revision 1 Fast Key Sequence
Table 2 may be used for transmitter configuration and startup.
®
Device Manager.
Table on page 6. For Fast Key sequences using legacy DD's, contact
Quick Start Guide
in
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