
** OUT_SCALE values
Indirect square root
Indirect Square Root signal conversion takes the square root of the value computed with
the indirect signal conversion and scales it to the range and units of the PV and OUT
parameters.
PV =
FIELD_VAL
100
× EU**@100% − EU**@0% + EU**@0%
** OUT_SCALE values
When the converted input value is below the limit specified by the LOW_CUT parameter,
and the Low Cutoff I/O option (IO_OPTS) is enabled (True), a value of zero is used for the
converted value (PV). This option is useful to eliminate false readings when the differential
pressure measurement is close to zero, and it may also be useful with zero-based
measurement devices such as flowmeters.
Note
Low Cutoff is the only I/O option supported by the AI block. You can set the I/O option in
Manual or Out of Service mode only.
J.5
Block errors
lists conditions reported in the BLOCK_ERR parameter.
Table J-2: BLOCK_ERR Conditions
ConditionNumber
Condition Name and Description
0
Other
1
Block Configuration Error: the selected channel carries a
measurement that is incompatible with the engineering
units selected in XD_SCALE, the L_TYPE parameter is not
configured, or CHANNEL = zero.
2
Link Configuration Error
3
Simulate Active: Simulation is enabled and the block is
using a simulated value in its execution.
4
Local Override
5
Device Fault State Set
6
Device Needs Maintenance Soon
7
Input Failure/Process Variable has Bad Status: The
hardware is bad, or a bad status is being simulated.
8
Output Failure: The output is bad based primarily upon a
bad input.
9
Memory Failure
10
Lost Static Data
11
Lost NV Data
Reference Manual
Analog-Input Block
00809-0100-4530
April 2019
Reference Manual
463
Содержание Rosemount 5300 Series
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