Honeywell SLG 700 Option Manual page 88

PV Value
The AI block PV value is determined based on the selected transducer channel's
PRIMARY_VALUE.
AI OUT
AI in Manual Mode
When the AI block is in manual mode, OUT can be written as a fixed value between -10% and +110%
of the OUT_SCALE range. OUT values between 0 and 100% shows a status of Good. OUT values
outside the range shows a status of Uncertain. The "limit" field is marked as Constant for all values.
PV shows the live temperature signal in manual mode.
AI in AUTO Mode
L_TYPE determines whether the signal is taken directly from the transducer block and passed to the
AI block output (L_TYPE = Direct) or converted into different units before it is passed to the AI
block output (L_TYPE = Indirect or Ind Sqr Root). OUT_SCALE determines the units' conversion
of the signal presented to the output.

When L_TYPE equals Direct, OUT is the same as the value passed from the transducer
block.

When L_TYPE is Indirect, the PRIMARY_VALUE is converted to XD_SCALE and that
value is set equal to OUT (FIELD_VAL = %). The OUT in % is re-ranged to a value using
the OUT_SCALE.

OUT status
The following table provides the resulting status of AI block OUT for a given status of
PRIMARY_VALUE in the transducer block.
If . . .
PRIMARY_VALUE status = Good::[alarm
status]:Not Limited
PRIMARY_VALUE status = Uncertain
nd
2 field in the PRIMARY_VALUE status
= Non Specific
PRIMARY_VALUE status = High or Low
Page 72
OUT value is tested against OUT_SCALE range values:
If OUT value is within the OUT_SCALE range, then OUT
status = Good Non Cascade::[alarm status]:Not Limited
If OUT exceeds OUT_SCALE range, then OUT status =
Uncertain:: Engineering Units Range Violation:& High or
Low Limited
OUT status = Uncertain
OUT status = Non Specific
OUT status = High or Low
FOUNDATION Fieldbus Option User's Manual
Then . . .
Rev.5