34 ● AT DMC-40x0 Command Reference
AT
FUNCTION: At Time
DESCRIPTION:
The AT command is a trippoint which is used to hold up execution of the next command until
after the specified time has elapsed. The time is measured with respect to a defined reference
time. AT 0 establishes the initial reference. AT n specifies n msec from the reference. AT -n
specifies n msec from the reference and establishes a new reference after the elapsed time
period.
ARGUMENTS: AT n where
n is a signed, even integer in the range 0 to 2 Billion
n = 0 defines a reference time at current time
n > 0 specifies a wait time of n msec from the reference time
n < 0 specifies a wait time of n msec from the reference time and re-sets the reference time
when the trippoint is satisfied.
(AT -n is equivalent to AT n; AT <old reference +n>
USAGE: DEFAULTS:
While Moving Yes Default Value 0
In a Program Yes Default Format -
Command Line No
Controller Usage
ALL CONTROLLERS
EXAMPLES:
The following commands are sent sequentially
AT 0 Establishes reference time 0 as current time
AT 50 Waits 50 msec from reference 0
AT 100 Waits 100 msec from reference 0
AT -150 Waits 150 msec from reference 0 and sets new reference at 150
AT 80 Waits 80 msec from new reference (total elapsed time is 230 msec)
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