KD Scientific Allegro Peristaltic Pump Series User Manual
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KD Scientific Allegro Peristaltic Pump System User’s Manual
Publication 5613-004-REV-A
Operating the KDS Allegro Peristaltic Pump System
PUMP CHAIN COMMANDS
The Pump Chain commands allow all pump control
information to be managed from an external computer
source. These commands can also be used to control a
series of pumps (up to 100) from a single computer
interface.
KDS Allegro Peristaltic Pump System commands are
communicated to the pump via the USB port interfaces
through a terminal program such as the Pump Control
program found on the Allegro Peristaltic Pump CD. In
using the Pump Chain commands, you will need to assign
each pump in the pump chain a unique address, using
the Set Pump Address command in the Settings menu. The
address range is from 00 to 99. This address value is
used to identify which pump is to receive a command and
which pump is responding. The first pump in the chain,
the one connected to the computer, must use address 0
(zero). Configure each pump with its assigned address
and baud rate as described in the Pump Settings section of
this guide.
Pump Chain Commands
KDS Allegro Peristaltic Pump commands are entered via
the USB port with a terminal program such as our Pump
Control program, or by using a controlling computer.
Commands may be abbreviated to the first four letters,
i.e. address would be abbreviated addr. A space must
follow the command if arguments are included.
Every line of the response from a pump with a nonzero
address is prefixed by the two digit pump address (prefixed
with a 0 if necessary) followed by a colon. No colon is
used to separate the pump address from the prompt however.
✐
NOTE: Once communication is established,
if you manipulate the touchscreen, you must
reestablish communications to the PC
(<CR> will do this)
✐
NOTE: System commands and start/stop
commands can be executed from program
or mode configuration screens. For
parameter commands (rate, dia, vol, etc) it
is necessary to execute from the
Configuration Run screen.
In the command list below, the following convention is used:
{ }
Required parameter
[ ]
Optional parameter
|
Separator between parameter choices
#
Numeric value without preceding zeros
###
Numeric value with preceding zeros
#-#
A range of values
<cr>
Carriage return
<lf>
Line feed
<sp>
Space
[prefix]
Pump address prefix in the format #: if the
pump address is not zero
<prompt>
Prompt (see below)
The following prompts are returned after a command is
executed:
:
The pump is idle
>
The pump is going forward direction
<
The pump is going reverse direction
*
The pump stalled
T*
The target was reached
If the pump is in poll mode, an XON character is added
after the prompt.
If the pump address is nonzero, the pump address is
prefixed to the prompt without a colon.
In the following list of commands:
The pump address is prefixed to every response line
followed by a colon.
<lf>[##]<prompt> is the response unless otherwise noted.
Error messages
Error messages are displayed if the entered command
cannot be executed for some reason. The error message
will take up two lines with the first line being the message
type and the second line describing the error itself. The
second line may be up to 80 characters long.
Command errors
Command errors are displayed when the command is
unrecognized, entered in the wrong mode, or the state of
the pump keeps the command from executing (i.e. using
the FRUN command if a limit switch is active).
The command error has the following format:
<lf>[##:]Command error:<cr>
<lf>[##:]<sp><sp><sp>{error message}<cr>
<lf>[##]<prompt>
✐
NOTE: To maximize communication speed
[as fast as 50 ms rate changes]: (a) prefix
commands with the @ symbol to turn off GUI
updates (ex: @frate 100 u/m) (b) use the
‘NVRAM off’ command to turn off writes of
rate to memory.