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Computer Interface Commands and Operation
4
4-39
Table 4-5. Command and Query Reference (cont)
INTVL Set Scan Interval
Set scan interval time.
INTVL <hours>,<minutes>,<seconds>
<hours> = (0 .. 9)
<minutes> = (0 .. 99)
<seconds> = (0 .. 99)
An Execution Error is generated if values outside the specified ranges are used or if
the instrument is scanning.
Example: INTVL 1,30,0 [Set the interval time to 1 hour, 30 minutes and 0 seconds.]
INTVL? Scan Interval Query
Return scan interval time. Returns the scan interval time in the format
<hours>,<minutes>,<seconds>.
Example INTVL? returns 0,0,0 [The interval time is 0 hours, 0 minutes, and 0
seconds (continuous scanning).]
LAST? Channel’s Last Scan Value
Returns the last measured value(s) for the scan in progress or the last completed
scan.
LAST? <channel>
<channel> = 0, 1, 2, ... 20
Returns last measurement values for either the indicated channel, or for all defined
channels if the <channel> field is left blank. An Execution Error results if a request is
made for a channel defined as OFF, the channel specified is invalid, the channel
specified has been set up but not yet measured, or Review array values have been
cleared by REVIEW_CLR, or by changing any parameter on any channel. The
returned value is a signed number with decimal point and exponent. For slow
scanning rate, 5 digits are returned (+/-XX.XXXE+/-N); for fast scanning rate, 4 digits
are returned (+/-XX.XXE+/-N). The channel range setting determines placement of
the decimal point. A return of +001.00E+9 indicates an overload (OL) condition; a
return of +009.00E+9 indicates an open thermocouple (otc) condition. If no channel
specification is made, all the last values of the scanned channels are returned, each
separated by a comma.
Example: LAST? 1 returns +0074.4E+0 [The last scanned value of channel 1 is
74.4.]
Example: LAST? returns +060.14E+0,+013.84E+0,+009.00E+9 [Three channels
were scanned. The first channel had a last reading of 60.14; the second channel had
a last reading of 13.84; the third channel reading indicates an open thermocouple
(RATE 0 and FORMAT 1 are asserted).]