Emerson 644 manual Lolopri

Rosemount 644

Reference Manual

00809-0400-4728, Rev AA June 2011

Table C-3. Definitions of Analog Input Function Block System Parameters

	Index
Parameter	No.	Available Values	Units	Default	Read/Write	Description
LO_ALM	35	Not applicable	None	Not applicable	Read only	The LO alarm data, which includes a value of the
						alarm, a timestamp of occurrence and the state
						of the alarm.
LO_LIM	30	Out_Scale(2)	Out_Scale(2)	Not applicable	Read and Write	The setting for the alarm limit used to detect the
						LO alarm condition.
LO_LO_ALM	36	Not applicable	None	Not applicable	Read only	The LO LO alarm data, which includes a value of
						the alarm, a timestamp of occurrence and the
						state of the alarm.
LO_LO_LIM	32	Out_Scale(2)	Out_Scale(2)	Not applicable	Read and Write	The setting for the alarm limit used to detect the
						LO LO alarm condition.
LO_LO_PRI	31	0 – 15	None	1	Read and Write	The priority of the LO LO alarm.
LO_PRI	29	0 – 15	None	1	Read and Write	The priority of the LO alarm.
LOW_CUT	17	> = 0	Out_Scale(2)	0	Read and Write	If percentage value of transducer input fails
						below this, PV = 0.
MODE_BLK	05	Auto	None	Not applicable	Read and Write	The actual, target, permitted, and normal modes
		Manual				of the block.
		Out of Service				Target: The mode to “go to”
						Actual: The mode the “block is currently in”
						Permitted: Allowed modes that target may take
						on
						Normal: Most common mode for target
OUT	08	Out_Scale(2) ± 10%	Out_Scale(2)	Not applicable	Read and Write	The block output value and status.
OUT_D	37	Discrete_State 1 – 16	None	Disabled	Read and Write	Discrete output to indicate a selected alarm
						condition.
OUT_SCALE	11	Any output range	All available	none	Read and Write	The high and low scale values, engineering units
						code, and number of digits to the right of the
						decimal point associated with OUT.
PV	07	Not applicable	Out_Scale(2)	Not applicable	Read only	The process variable used in block execution.
PV_FTIME	18	> = 0	Seconds	0	Read and Write	The time constant of the first-order PV filter. It is
						the time required for a 63% change in the IN
						value.
SIMULATE	09	Not applicable	None	Disable	Read and Write	A group of data that contains the current
						transducer value and status, the simulated
						transducer value and status, and the
						enable/disable bit.
ST_REV	01	Not applicable	None	0	Read only	The revision level of the static data associated
						with the function block. The revision value will be
						incremented each time a static parameter value
						in the block is changed.
STATUS_OPTS	14	Propagate fault forward		0	Read and Write
		Uncertain if Limited
		Bad if Limited
		Uncertain if Man Mode
STDDEV	39	0 – 100	Percent	0	Read and Write	The average absolute error between the PV and
						its previous mean value over that evaluation time
						defined by VAR_SCAN.
STRATEGY	03	0 – 65535	None	0	Read and Write	The strategy field can be used to identify
						grouping of blocks. This data is not checked or
						processed by the block.
TAG_DESC	02	32 text characters	None	none	Read and Write	The user description of the intended application
						of the block.
UPDATE_EVT	20	Not applicable	None	Not applicable	Read only	This alert is generated by any change to the
						static data.
XD_SCALE	10	Any sensor range	inH2O (68 °F)	AI1(1): Customer		In all Rosemount devices the units of the
			inHg (0 °C)	specification		transducer block is forced to match the unit code.
			ftH2O (68 °F)
			mmH2O (68 °F)	or
			mmHg (0 °C)	inH2O (68 °F) for
			psi
			bar	DP/GP rng 1, 2, 3)
			mbar
			g/cm2	or
			kg/cm2
			Pa	psi for DP/GP rng
			kPa	4, 5 AP/644 all rng
			torr	AI2 deg C
			atm
			deg C
			deg F

(1)The host system may write over default values pre-configured by Rosemount Inc.

(2)Assume that when L_Type = Direct, the user configures Out_Scale which is equal to XD_Scale

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