Next Advance SP1070-M - Manual (Page 30)

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SP1000 series operator’s manual
Manual SP1000 series 23
9.3.11 ‘LP:nn’: Define Loop End and Loop Repetitions
nn
Repeats execution of the defined loop ‘nn’ times.
Loop starts and loop ends are uniquely paired during looping. When an unpaired ‘loop end’ function is
executed, it is paired with the most recent unpaired ‘loop start’ function executed (‘LP:ST’). If no unpaired
‘loop start’ function exists, Phase 1 is used as an implied unpaired ‘loop start’. This pairing defines the
loop and the range of Phase numbers between the paired loop functions defines the scope of the loop.
When a ‘loop end’ function is executed, Program operation continues with the ‘loop start’ function paired
with the loop end function. There are 2 ‘loop end’ functions: Loop continuous (‘LP:EN’) and Loop for a
preset number of iterations (‘LP:nn’), indicated by ‘nn’. Each time a paired ‘loop end’ function is
executed, an iteration of the loop is complete. With the ‘LP:nn’ function, after ‘nn’ number of loop
iterations, the defined loop is complete and Program execution continues with the next Program Phase after
the ‘loop end’ function. The loop is then no longer defined or paired.
While executing Phases within the scope of a defined loop, another ‘loop start’ and ‘loop end’ can be
paired and become a defined loop within the scope of the first loop, which is referred to as the outer loop.
The new loop being referred to as the inner loop. The pairing of a loop within a paired loop is referred to
as nesting of loops, with each loop being one nested layer for the duration of the loops pairing. Loops can
be nested for a total of 3 layers deep. Loops can only be nested within the scope of an outer loop.
9.3.12 'PS:nn': Pause Pumping
If ‘nn’ is non-zero, the Pumping Program will pause pumping (stops pumping) for ‘nn’ seconds. When
executed, the display will show
nn
, with ‘nn’ decrementing to indicate the number of seconds
until the next Program Phase is executed. After the pause interval, the next Program Phase will be
executed.
To set a pause time in tenths of seconds, select the decimal point between the digits. To select the decimal
point, press and hold the right-most arrow key until the right-most digit scrolls to 9. After 9, the decimal
point between the 2 digits will toggle on and off . Release the key when the decimal point is
displayed, or cleared, as required. Now enter the required pause time from 0.1 to 9.9 seconds. While
executing a pause time set in tenths of seconds, the display will only show '01' seconds during the pause.
For pauses longer than the ‘99’ second maximum pause for this function, put the pause function within a
Program loop. A Program section with the following functions in consecutive Phases:
[LP:ST] [LP:ST] [PS:60] [LP:60] [LP:24],
will pause the Pumping Program for 24 hours.
If ‘nn’ is ‘00’ then the Pumping Program pauses and waits for a start trigger to resume the Program. The
display will show when waiting for a start trigger.
After the start trigger, the Program will resume with the next Phase. The start trigger can be from any
source, the ‘Start’/’Stop’ key, the TTL I/O Operational Trigger, or from RS-232. Any other key input will
stop and reset the Pumping Program.
If alarms are enabled, the buzzer will beep continuously while waiting for the start trigger.
9.3.13 'IF:nn': Jump to Phase If External Trigger
nn
The ‘IF’ function conditionally alters the Pumping Program’s execution based on an external
signal.
When executed, if the TTL I/O Program Input pin (pin 6) is low level, then the Pumping Program continues
operation with Phase number ‘nn’. Otherwise, the Pumping Program continues operation with the next
Phase.