Establishing Multi Drop Communication - Emerson Rosemount 644 Reference Manual

Section 2: Configuration
April 2015
1, Sensor 2, Differential, Average, First Good and Terminal temperatures. Min/Max Tracking only
records temperature maxima and minima obtained since the last reset, and is not a logging
function.
To track maximum and minimum temperatures, Min/Max Tracking must be enabled using a
Field Communicator, AMS Device Manager, Local Operator Interface, or other communicator.
While enabled, this feature allows for a reset of information at any time, and all variables can be
reset simultaneously. Additionally, each of the individual parameter's minimum and maximum
values may be reset individually. Once a particular field has been reset, the previous values are
overwritten.
Configure min/max tracking with a Field Communicator
From the HOME screen, enter the Fast Key sequence.
Device Dashboard Fast Keys
Configure min/max tracking with a AMS Device Manager
1.
2.
3.
4.
Configure min/max with LOI
Reference the figure below to find the path to Configure Min/Max in the LOI menu.
Figure 2-22. Configuring Min/Max Tracking with LOI
VIEW CONFIG
SENSOR CONFIG
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU EXTENDED MENU
EXIT MENU
* Available only if option code (S) or (D) is ordered.
2.12

Establishing multi drop communication

Multi dropping refers to the connection of several transmitters to a single communications
transmission line. Communication between the host and the transmitters takes place digitally
40
with the analog output of the transmitters deactivated.
Right click on the device and select Configure.
In the left navigation window select Manual Setup.
On the Diagnostics tab, there is a group box labeled Sensor and Process Diagnostics;
select the button for Configure Min/Max Tracking.
Follow the screen prompts to Enable and configure the settings for the diagnostic.
2, 2, 4, 3, 5
CALIBRAT
DAMPING
VARIABLE MAP
TAG
ALM SAT VALUES
PASSWORD
SIMULATE
HART REV
HOT BACK CONFIG*
DRIFT ALERT*
TC DIAG CONFIG
MIN MAX TRACK MIN MAX TRACK
BACK TO MENU
EXIT MENU
Reference Manual
00809-0200-4728, Rev RA
MIN-MAX MODE
PARAM CONFIG
VIEW VALUES
RESET VALUES
BACK TO MENU
EXIT MENU
Configuration