New Era CBL-DUAL-3 RS-232 Dual pumps communications cable (3) - Manual (Page 3)

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Reciprocating and Dual Modes
Reciprocating Mode Dual Mode
Pumping Directions Pumping Directions
Syringes: Each pump can have a different size syringe, but make sure that the pumping rates on
the Master pump are within range of the syringe used on the Secondary pump. If an out-of-range
pumping rate is sent to the Secondary pump, the rate will just be ignored by the Secondary pump
without affecting the operation of the Master pump.
Master Pump: Pumping rate and direction are only transmitted to the Secondary pump from the
Master pump while the Master pump is pumping. If the Master pump starts or stops, the
Secondary pump will start or stop.
Reciprocating mode Sent to second pump: Rate and opposite pumping direction.
Dual mode
Sent to second pump: Rate and current pumping direction.
Secondary Pump: Changes to the pumping rate and direction on the secondary pump will not be
transmitted to the Master pump. If the Secondary pump stops, the Master pump will also stop.
Pump Stall: If either pump stalls, then the other pump will also stop.
Synchronization between pumps: The secondary pump will lag approximately 30 milliseconds
behind the Master pump due to communications delay.
Reciprocating Pump Program
Below are examples of how to setup the pumps for reciprocating, continuous flow operation.
The Pump 1 program is the default program that is loaded as indicated in the "Default Program
Selection" section. Pump 1 is the Master pump which controls the Secondary pump's operation.
In Reciprocating mode, Pump 2 will pump continuously in the opposite direction of Pump 1, at
the same rate as Pump 1, and will change direction when Pump 1 changes direction.
Pump 1 (Master Pump)
Phase Function Rate Volume Direction
1 RATE 500 mL/hr 10.0 mL Infuse
2 FILL 0.0 mL/hr ----------- ------------
3 JP:01
Pump 2 (Secondary Pump)
Phase Function Rate Volume Direction
1 RATE 500 mL/hr 0.0 mL (off) Withdraw
2 STOP