Omega Vehicle Security 1400 manual Set Data Format, Data Input Formats see Note

API Commands Appendix A

F- Set Data Format

TYPE	System
EXECUTION	Deferred
SYNTAX	Fengr,	Configure the input and output formats.
	format	engr converts the raw data to the engineering units with which you prefer
		to work. Valid options are: 0 - °C, 1 - °F, 2 - °R, 3 - °K, and 4 -
		Volts.
		°C is the default engineering unit.
		format places the readings in a format with which you prefer to work.
		Valid options are: 0 - Engineering Units (default), 1 - Binary (Low
		Byte/High Byte), 2 - Binary (High Byte/Low Byte), and 3 - Counts
		(ASCII).
	F?	Query the data format.
DESCRIPTION

The Set Data Format (F) command configures the input and output data format for data transmissions with the unit, and requires two arguments. The first argument engr is the engineering units, the second argument format is the reading format.

When the unit is inputting or outputting data, it first references the current reading format. If format is 0 (Engineering Units), it will then reference the current settings of the engineering units and then perform the necessary conversion.

Data Input Formats (see Note 1)

Data Type		0	3
		Engineering Units	Counts
Temperature		xxxx.xx °C	±xxxxx
	0
	1	xxxx.xx °F
	2	xxxx.xx °R
	3	xxxx.xx °K
Volts	4	+xx.xxxxxxxxx	±xxxxx
Time/Date		hh:mm:ss.mil,MM/DD/YY	Interpreted as
Absolute			Engineering Units
Relative		+hh:mm:ss.mil,DDDDDDDD
Timebase		hh:mm:ss.mil	Interpreted as
			Engineering Units

Legend

x = ASCII digit	MM = month
h = hour	DD = day
m = minute	YY = year
s = second	DDDDDDDD = day
mil = see Note 2

Note 1: Binary Low Byte/High Byte (1) and Binary High Byte/Low Byte (2) are interpreted as engineering units.

Note 2: mil is milliseconds for ASCII, but microseconds for binary (2-hexidecimal) format.

The Set Data Format (F) command determines the format of readings input from the controller. However, the only readings input from the controller come in the form of command parameters and there are only two commands which take readings as parameters: the Configure Channels (C) and the Set Trigger Level (L) commands. These are the only command parameters over which the F command has control.

With both the C and L command the F command may determine the format of the hysteresis parameter. The F command may also determine the high and low setpoint format in the C command.

The reading parameters for the C and L commands cannot be issued in binary format. If binary format is specified by the F command, these parameters will be interpreted as Engineering Units. These parameters will always be interpreted as Engineering Units (as currently defined by the Engineering Units argument of the F command) except when the Counts format is specified. When the Counts format is specified, these parameters are interpreted as Counts. For additional information on the different format types, see the Data Format section in Appendix C.

If readings are interpreted as Counts or Binary format then the engineering unit parameter of the F command is ignored.

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A-30 ChartScan User’s Manual