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Reference Manual
00809-0200-4801, Rev BA
April 2007
Rosemount 3051S
3-20
CUSTOM_UNITS_#
(1)
Specify custom units to be displayed with the parameter. Enter up to six
characters. To display Custom Units the UNITS_TYPE_# must be set to
CUSTOM.
Displaying a variable from another device on the segment (Example)
Any variable from a device on the network can be displayed on the 3051S
LDC but the variable must be on a regularly scheduled communications cycle
and the variable must be linked to a block within the 3051S. A typical
configuration to do this is to link the output of the function block of the variable
to one of the unused inputs of the Input Selector Block.
Display bar graph The 3051S LCD is equipped with a bar graph along the top portion of the
display screen. The bar graph will display the percent of range of AI.OUT (see
Figure 3-6) of the AI block configured for Channel 1 (pressure) of the Sensor
Transducer Block.
The bar graph on the LCD can be enabled from the DISPLAY_PARAM_SEL
parameter in the LCD block.
If no AI block is found to be configured for Channel 1 the bar graph (including
annunciators) will remain blank. If more than one AI block is found to be
configured for the Channel 1 the AI block with the lowest OD index will be
used to calculate the bar graph value.
The following equation is used to calculate the percent of range of AI.OUT:
Figure 3-6. Bar Graph Value
If the bar graph value calculation returns a value less than 0%, the LCD will
display a bar graph value of 0%.
If the bar graph value calculation returns a value greater than 100%, then the
LCD will display a bar graph value of 100%.
Any Function block on Segment
IN_5
IN_8
IN_7
IN_6
Input Selector
Parameter X
Bar Graph Value = 100 * (AI.OUT – AI.OUT_SCALE @ 0%)
(AI.OUT_SCALE @ 100% – AI.OUT_SCALE @ 0%)