Emerson Rosemount 848T, Reference Manual, Page: 118 / 136

108
Reference Manual
00809-0100-4697, Rev GA
Appendix D: Function Blocks
November 2014
Function Blocks
D.2.1 Functionality
Simulation
To support testing, either change 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 (this single value will apply to all outputs). In both cases, first
set the ENABLE jumper on the field device.
Note
All F
OUNDATION
fieldbus instruments have a simulation jumper. As a safety measure, the jumper
has to be reset every 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. The OUT values will all have the same value as determined by the simulate value.
Figure D-3. Multiple Analog Input Function Block Timing Diagram
27, 28,
29, 30,
31, 32,
33, 34
CHANNEL_(1,
2, 3,4 5, 6, 7,
8)
None The CHANNEL (1, 2, 3, 4, 5, 6, 7, 8) value is used to select
the measurement value. See
Table D-4 on page 106
for available channels. Configure the CHANNEL
parameters to custom (2) before configuring the
CHANNEL parameters.
35, 36,
37, 38,
39, 40,
41, 42
STDDEV_(1, 2,
3, 4, 5, 6, 7, 8)
% of OUT
Range
Standard deviation of the corresponding measurement.
43, 44,
45, 46,
47, 48,
49, 50
CAP_STDDEV_
(1, 2, 3, 4, 5, 6,
7, 8)
% of OUT
Range
Capability standard deviation, the best deviation that
can be achieved.
Table D-4. Multiple 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