Watson-Marlow 624Di - Manual (Page 7)

Watson-Marlow Bredel E-Manuals
http://www.watson-marlow.it/pdfs-global/m-624Di-gb-01.htm[10/07/2012 13:59:15]
nTC Clear tachometer counter
nRT Read tachometer counter
For writing to pump number n display
nCA Clear existing display; followed by:
nCH "Home" cursor; followed by:
nW{text line 1}~{text line 2}@ (@ = terminator)
Notes on control codes
1 n = pump number set in SETUP. For the command to operate on all networked pumps
simultaneously, use # before the command.
2 There are 1046 tacho pulses per revolution at the maximum drive speed of 200rpm.
3 nDOxxxxxxxx where xxxxxxxx is any integer and is the target dose in tacho pulses.
This can be extended to nDOxxxxxxxx,yyy where yyy is a "kick back" in tacho pulses
with a limit of 255 (about 1 revolution on a 200rpm drive).
4 A show status command will prompt the 624Di to return a text string of the following
layout:
[pump type] [ml/rev] [pumphead] [tube size] [speed] [cw/ccw] [P/N] [pump number]
[tacho count as a single integer] [stopped/running, 0 /1] [! = delimiter]
eg 625Di 0.7 625L 4.8mm 100 CW P/N 1 157810 1 !
5 All networked pumps with the same n will respond to the same command.
6 There should be at least 10mS between consecutive commands.
7 When using the # to address all pumps, ensure that it will not generate a reply, eg
nSS; the result will be unpredictable.
This is a typical short program for pump number 2:
OPEN "COM1:9600,N,8,2,CDO,CSO,DSO,OP10000" FOR RANDOM AS #1
PRINT #1, "2SP220" + CHR$(13)
DELAY (command depends on language being used)
PRINT #1, "2GO" + CHR$(13)
DELAY 5000
PRINT #1, "2ST" + CHR$(13)
CLOSE #1.
Setup
ROM - provides user with software identification.
Date/Time - Set during manufacture but can be reset to user requirements.
Beep - Audible signal on/off.
Ramp - Rate of acceleration/deceleration of the pump to/from maximum set speed at the
beginning/end of a dose. 0 setting signifies no acceleration delay to maximum speed, 5
signifies the longest acceleration delay to maximum speed.
Drip - Brief reversal of the motor on dose completion ensures no extra drips of fluid are
dispensed. 0 means no reverse and 5 means maximum reverse.
Baud - Speed of signal transmission. Default setting 9600, range of setting include 1200,
2400, 4800, 9600.
Auxiliary - Monitor the pump dosing or motor state/direction of rotation using 2 high (5V)
/low (0V) auxiliary signals outputted via the pumps 25 pin cage clamp connector. Auxiliary
signals can be used, for example, to command a turntable or conveyor to move when a
dose has been completed.