Software Communication 3-22
❑ When a command is sent, the pump answers immediately. If an invalid command
has been sent in a command string, the pump reports an error immediately. If there
was an invalid parameter in the command, the pump will execute up to the invalid
parameter, then it stops. In the case of a [Q] (Query) command, the error is read
back to the host computer.
❑ It is important to send the velocity commands in the proper order to insure that all
parameters are read. The XP 3000 queries for the input of the velocity commands
in the following order: backlash [K], slope [L], start velocity [v], top velocity [V],
and cutoff velocity [c]. Not inputting these values in the above order causes the
XP 3000 to rely on the default values for these commands.
❑ Always run liquid through the syringe and valve when issuing a Move command.
Failure to do so may damage the valve and syringe seal.
❑ Keep fingers out of the syringe slot while the pump is running. Failure to do so can
result in injury.
Command Syntax
The syntax for each command in the command set is:
<n> Numerical value within a given range
0..6000 Range of numerical values allowed
(n) Default value
NOTE Square brackets, [ ], are used to distinguish commands and should not be sent
as part of the command strings.
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