Xantrex Technology XHR, XFR, XFR3 manual Description Form, Floating Number Definition Example

Operation

Command Syntax

•Use commas between parameters in those commands with more than one parameter, and between mnemonic parameters as in the MASK and UNMASK commands. Only one comma is allowed and it may be preceded or followed by any number of spaces.

Example:	MASK CV, OV, FOLD
Table 3.3	Command Parameters
Parameter		Description	Form
<current>, <Ihi>, <Ilo>		The current in amps or milliamps. If no unit is	<float>
		given, the default unit is amps.	<float>A
			<float>mA
<time>		The time in seconds or milliseconds. If no unit	<float>
		is given, the default unit is seconds.	<float>s
			<float>ms
<voltage>, <Vlo>, <Vhi>		The voltage in volts or millivolts. If no unit is	<float>
		given, the default unit is volts.	<float>V
			<float>mV
<mnemonics>		A combination of CV, CC, CV, OV, OT, SD,	See registers
		FOLD, ERR, PON, REM, ACF, OPF, and	on page 50.
		SNSP. See MASK and UNMASK commands
		in the command reference for use of the ALL
		and NONE parameters.
<state>		The state of a binary condition.	<1/ON,
			0/OFF>

Floating Point Number <float> Variables sent with command parameters are floating point numbers. Table 3.4 defines the structure of floating point numbers for use with the software commands.

Table 3.4 Floating Point Numbers

Floating Number Definition	Example
The floating point number has four significant fig-	1.234
ures. It can be of either sign, positive or negative.	-1.234
	+1.234
A floating point number can have one decimal point.	0.123
	1.2
	123.4
Scientific Notation	123.0E-1
Use E or e after the number for a base ten exponent.	1.2E-1
An integer of either sign must follow an exponent.	10.00E+1

38 Operating Manual for GPIB for XHR/XFR Series Power Supply