Varec 8315 Series manual 19 L&J MCG2000 Tank Gauge LJ2000, Parameters

8300 8315 L&J Tankway Software Description

4.19 L&J MCG2000 Tank Gauge (LJ2000)

The LJ2000 point provides an interface to L & J MCG2000 Tank Gauge transmitters. This point provides both level and temperature data. Point and gauge status information is also available in this point block. This point executes on the Model 8315 Tank Gauge Interface module.

4.19.1Parameters

The database parameters used by the LJ2000 point are listed and described below:

Configuration Parameters	Function
Tag	A Tag can contain 15 bytes of data and can include any printable
	ASCII character. Tags can be used to identify the name of the tank
	being monitored The default tag is set to “LJ2000.00”.
Description	A description can contain 30 bytes of data and can include any
	printable ASCII character.
ID	Physical Address (0-127). The default is 0
DevType	Tank Gauge Type.
	DevType = 1 Uses a gray code table for CCW Varec gauges
	DevType = 2 Uses a gray code table for CCW S&J gauges
	DevType = 3 reports data in feet and hundredths of a foot
	DevType = 4 reports data in 32nds of inches
Module	Physical address (1-4) of the Model 8315 used to interface to the
	tank gauge transmitter. A value of 255 is undefined.
Filter	Gauge data filter constant. The Filter is used when scanning data
	from an L&J gauge. A buffer is maintained for the last 8 readings.
	The Filter determines how many of the reading in the buffer are
	used when calculating the Level and Temp parameters. If all of
	the level readings are within a deadband determined by the
	LJSCAN LevelDeadband parameter, then the Level reading is
	updated with the latest data. If a large change is detected (data
	changed more than the LevelDeadband), then the Level is not
	updated until the change between readings is less than the
	LevelDeadband. The default is 3.
TempDeadband	Change of State temperature deadband value. This parameter is
	used when the Report is High or Low to determine if a change of
	state has occurred. This parameter does not affect the Temp
	parameter value, only if it is automatically sent to the Host
	system.
LevelDeadband	Change of State level deadband value. This parameter is used
	when the Report is High or Low to determine if a change of state
	has occurred. This parameter does not affect the Level parameter
	value, only if it is automatically sent to the Host system.
Report	Causes automatic notification to the Host (in response to a
	Change of State Request) when the Value Changes State.
	Parameter value can be High, Low or No. Report=No disables
	notification. Points with Report = High will be sent before points
	with Report = Low. The default is High.

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