New Era NE-500 Multi-Phaser Programmable OEM Syringe - Manual (Page 12)

New Era Pump Systems Inc.
www.SyringePump.com
Model NE-500/NE-501 Multi-Phaser™
Publication #1200-02 7 09/18/14
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 effect 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 | REV | STK]”
Sets/queries the direction of pumping to Infuse (INF) or Withdraw (WDR)
REV reverses the pumping direction: Infuse to Withdraw, or Withdraw to Infuse.
5.5.1 Sticky Direction
STK (Valid only when the Pumping Program is stopped)
Sets the pumping direction of the current Pumping Program Phase to “Sticky Direction”
“Sticky Direction” will continue the pumping direction of the previous Pumping Phase or, if the first Phase, set
the pumping direction according to the logic level of the “Pumping Direction” TTL input pin (pin 3):
Direction Control: Reciprocating Pumps Dual Pumps
Low Level: Infuse Withdraw
High Level: Withdraw Infuse
5.6 Dispense Volume Target and Continuous Pumping
Command: "VOL [<float>]”
The “VOL” command sets/queries the “Volume to be Dispensed”. The default volume units are set according
to the syringe diameter to either
µL or mL. The current Pumping Phase will continue to pump, infusing, or
withdrawing, until the set “Volume to be Dispensed” has been pumped.
For continuous pumping, set the volume target to 0: Command "VOL 0".
5.6.1 Set Volume Units
Command: “VOL { UL | ML }”
Changes/queries the global volume units for dispensing and volume targets to either µL or mL (UL or ML).
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.