3 - Software Communication
Operating Commands
Cavro® XLP 6000 Modular Syringe Pump Operating Manual, 734237-C, en
3 - 27
w<n
1,
n
2
> Initialize Valve Drive
The [w] command initializes the valve drive only. Because the plunger is not
initialized, only the initialization port can be set.
n
1
= Set port
n
2
= Set valve homing and port numbering direction
The parameters are described below.
z
Simulated Plunger Initialization
The [z] command simulates an initialization of the plunger drive, however, no
mechanical initialization occurs. The current position of the plunger is set as
the zero (home) position.
This command can be used after a plunger overload error, to regain control of
the pump. After recovering from the overload condition using the [z]
command, the pump must be reinitialized using the Z<n
1
, n
2
, n
3
> or Y<n
1
, n
2
,
n
3
> commands to set the true home position.
Caution! Incorrect use of this command can damage the device.
3.5
Operating Commands
3.5.1
Valve Commands
Valve commands position the input and output channels to the specified ports.
Similar valve commands cause different actions depending on whether you are
using non-distribution valves or distribution valves.
With
non-distribution valves
, any combination of two valve ports, including or
excluding the syringe port, may be used. With
distribution valves
, the syringe
port is a common port, always included as one of the two valve ports in use.
The initialization command (Z, Y, or w) determines:
w Parameter
value
Description
<n
1
>
1..X
Set initialization port, where X is the number of ports on
the valve
<n
2
>
0
Valve homes in a
clockwise
direction; valve ports num-
bered in a
clockwise
direction.
1
Valve homes in a
counterclockwise
direction; valve
ports numbered in a
counterclockwise
direction.
