Instruction Manual

4
KDS Programmable Pumps
Menu Operation (Continued)
5) Rate (Continued)
c) Options:
1) if R1=R2=0 The pump is stopped, no flowrate.
2) if R1<R2 Flowrate increases LINEARLY from R1 to R2 over
the step duration.
3) if R1>R2 Flowrate decreases LINEARLY from R1 to R2 over
the step time.
6) PIN OUT
TTL Output pins can be controlled to set the levels high (H) or low (L) during the step.
This change in status of an output pin can be used to trigger another external event.
Pins 1and 6 on the 9-pin TTL connector can be controlled in the program.
The display reads: # Pinout: 1= H, 6= H
Options: HH, HL, LH, LL
The arrow keys are used to toggle through the options. Select and Enter are used
to save the settings.
7) Pause
If the Pause option is selected in a step, the pump completes the step and pauses
at the end of the step.
The display reads: Paused @ end of n where n is the step number
The pump is programmed but stopped, waiting to be actuated, either by:
a) Run/Stop key
b) "RUN" command via RS232
c) TTL input, Pin 8 ; level change from High to Low.
The display reads: # Pause: Inactive Active
Use the arrow key and SELECT to save.
8) Loop
A loop permits the program to return to and execute a previous step, or steps, and
repeat these steps a specified number of times (up to 100).
The menu first prompts for a loop selection: # Loop?: Yes No
Loop selection is made using the arrow keys to move to Yes or No. SELECT to save.
a) L
OOP t
o STEP
The menu now prompts for the Step # the program Loop should return
to. For example, if the program is at step 5 and the loop step selected
is #3,
t
hen the program executes step 3, 4 and 5 again.