AMETEK PLA-PLW Programming Manual - Manual (Page 68)

64
P
ROGRAMMING
STEP
S
STEP mode lets you generate complex sequences of input changes with rapid, precise timing,
which may be synchronized with internal or external signals. This is useful when running test
sequences with a minimum amount of programming overhead.
You can program up to 128 settings (or points) in the STEP, the time interval (time) that each
setting is maintained, the number of times that the STEP will be executed, and how the
settings change in response to triggers. All STEP data is can be stored in nonvolatile memory
when saved in profile locations 0 to 3 using the *SAV command. This means that the
programmed data for any STEP will be retained when the electronic load is turned off. Use
the *RCL command to recall the saved state. *RST clears the presently active STEP but will
not clear the STEPs saved in profile locations 0 to 3.
STEP steps can be either individually triggered, or paced by a separate STEP of dwell times
that define the duration of each step. Therefore, each of the up to 128 steps has an
associated dwell time, which specifies the time (in milli-second) that the input remains at that
step before moving on to the next step.
STAT
E
ON
MODe:CURRent
STEP:CURRent[:LEVel] 1,15
; Program the STEP of input values for each
function. The STEP commands take a
comma-separated STEP of arguments.
STEP:CURRent[:LEVel] 2,30
STEP:CURRent[:LEVel] 3,45
STEP:CURRent[:LEVel] 4,60
STEP:CURRent:TIMe 1,1000
; Determine the time interval that the input remains
at each level or point in the STEP before it
advances to the next point. The time is specified in
mill-seconds.
STEP:CURRent:TIMe 2,1500
STEP:CURRent:TIMe 3,2000
STEP:CURRent:TIMe 4,2500
STEP:COUNt 10
; Determine the number of times the STEP is
repeated before it completes. Entering 0 or INFinity
makes the STEP repeat indefinitely. At *RST, the
count is set to 1.
INPut ON
STEP:CURRent:STATe ON
; the entire STEP to be executed immediately,
paced by its dwell delays. As each dwell delay
elapses, the next point is immediately executed.
(other statements)
STEP:CURRent:STATe OFF ; Stop the STEP sequencing.