Emerson Rosemount 644 FOUNDATION, Reference Manual

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18
Reference Manual
00809-0400-4728, Rev CA
Configuration
September 2018
Configuration
2.4.4 LCD transducer block
The LCD display meter connects directly to the Rosemount 644 electronics F
OUNDATION
Fieldbus output
board. The meter indicates output and abbreviated diagnostic messages.
The first line of five characters displays the sensor being measured.
If the measurement is in error, “Error” appears on the first line. The second line indicates if the device or
the sensor is causing the error.
Each parameter configured for display will appear on the LCD display for a brief period before the next
parameter is displayed. If the status of the parameter goes bad, the LCD display will also cycle diagnostics
following the displayed variable.
Custom meter configuration
Shipped from the factory, Parameter #1 is configured to display the primary variable (temperature) from
the LCD transducer block. Parameters 2–4 are not configured. To change the configuration of Parameter
#1 or to configure additional parameters 2–4, use the configuration parameters below.
The LCD transducer block can be configured to sequence four different process variables as long as the
parameters are sourced from a function block that is scheduled to execute within the Rosemount 644
temperature transmitter. If a function block is scheduled in the Rosemount 644 that links a process
variable from another device on the segment, that process variable can be displayed on the LCD display.
DISPLAY_PARAM_SEL
The DISPLAY_PARAM_SEL parameter specifies how many process variables will be displayed. Select up to
four display parameters.
BLK_TAG_#
(1)
Enter the Block Tag of the function block that contains the parameter to be displayed. The default
function block tags from the factory are:
TRANSDUCER
AI 1300
AI 1400
PID 1500
BLK_TYPE_#
(1)
Enter the block type of the function block that contains the parameter to be displayed. This parameter is
generally selected via a drop-down menu with a list of possible function block types. (e.g. Transducer,
PID, AI, etc.)
PARAM_INDEX_#
(1)
The PARAM_INDEX_# parameter is generally selected via a drop-down menu with a list of possible
parameter names based upon what is available in the function block type selected. Choose the
parameter to be displayed.
CUSTOM_TAG_#
(1)
The CUSTOM_TAG_# is an optional user-specified tag identifier that can be configured to be displayed
with the parameter in place of the block tag. Enter a tag of up to five characters.
1, “#” represents the specified parameter number.