Next Advance SP2200 - Manual (Page 12)

NEXT>>>ADVANCE www.nextadvance.com
SP2200Programmable Syringe
Pump
Publication #1200-02 7 04/29/10
depend on the Program Phase setup. The volume dispensed can be queried with the 'DIS' command.
While pumping, the pump will pump continuously in the current Program Phase, unless a “Volume to be
Dispensed” is set, or an Event trigger is set. If a “Volume to be Dispensed” is set, the Program Phase will be
complete after the set volume has been infused or withdrawn, measured from the start of the Phase.
5.4 Pumping Rate
Command: "RAT [<float> [<units>]]"
Sets/queries the pumping rate and rate units.
5.4.1 Changing the Pumping Rate and Direction While Pumping
Command: "RAT <float>"
Except with some complex Pumping Programs, the pumping rate can be changed while the pump is operating.
To change the pumping rate while pumping, use the 'RAT' command to send a new rate. A new rate set while
pumping will not be stored in non-volatile memory. Rate units cannot be changed while pumping.
If the new rate is valid, it will take affect immediately.
The pumping direction can be changed while pumping if the “Volume to be Dispensed” is 0.0. The direction
command "DIR" will immediately change the pumping direction and store the pumping direction in the current
Program Phase. Also changing the pumping direction changes the accumulated “Volume Dispensed”
according to the new pumping direction.
5.5 Pumping Direction
Command: "DIR [INF | WDR]
Sets/queries the direction of pumping to Infuse (INF) or Withdraw (WDR)
5.6 Dispense Volume Target and Continuous Pumping
Command: "VOL [<float>]
To set a dispense volume, use the "VOL" command. The units of volume are set according to the syringe
diameter to either
L or mL. The current Pumping Phase will continue to pump, infusing, or withdrawing, until
the set volume has been pumped.
For continuous pumping, set the volume target to 0: Command "VOL 0".
5.7 Volume Dispensed
Volume is computed based upon the syringe inside diameter setting. The volume is accumulated separately
for infusion and withdrawal. The volume dispensed for infusion and withdrawal can be queried with the "DIS"
command.
The “Volume Dispensed” accumulations, for infusion and withdrawal, are reset to 0 when:
A) The pump is powered on.
B) The syringe diameter is changed.
C) From the RS-232 clear “Volume Dispensed” command (CLD).
D) The accumulated Volume Dispensed rolls over from 9999 to 0.
E) A sub-program is selected when the Pumping Program executes a Sub-Program Selection
function.