Reference Manual
00809-0100-4697, Rev EA
October 2011
D-3
Rosemount 848T
Functionality Simulation
To support testing, either ch ange the mode of the block to manual and adjust
the output value, or enable simulation through the configuration tool and
manually enter a value for the measurement value and its status. In
simulation, the ENABLE jumper must be set on the field device.
NOTE
All FOUNDATION fieldbus instruments have a simulation jumper. As a safety
measure, the jumper has to be reset ever y time there is a power interruption.
This measure is to prevent devices that went through simulation in the staging
process from being installed with simulation enabled.
With simulation enabled, the actual measurement value has no impact on the
OUT value or the status.
Figure D-1. Analog Input
Function Block Timing Diagram
36 LO_LO_ALM None The LO LO alarm data, which includes a value of the alarm, a timestamp of
occurrence and the state of the alarm.
37 OUT_D None Discrete output to indicate a selected alarm condition.
38 ALM_SEL None Used to select the process alarm conditions that will cause the OUT_D parameter to
be set.
39 STDDEV % of OUT Range Standard deviation of the measurement for 100 macrocycles.
40 CAP_STDDEV % of OUT Range Capability standard deviation, the best deviation that can be achieved.
Table D-1. Analog Input Function Block Parameters
Number Parameter Units Description
PV_FTIME
63% of Change
OUT (mode in man)
OUT (mode in auto)
PV
Time (seconds)
FIELD_VAL