28 ● AT DMC-1400 Series 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 integer in the range 0 to 2 Billion
n = 0 defines a reference time at current time
positive n waits n msec from reference
negative n waits n msec from reference and sets new reference after elapsed time period
(AT -n is equivalent to AT n; AT 0)
USAGE:
While Moving Yes Default Value 0
In a Program Yes Default Format ---
Command Line Yes
Can be Interrogated No
Used as an Operand No
Controller Usage ALL
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)