Watson-Marlow 505Du User Manual
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nRC
Change rotation direction for pump n
nRR
Set clockwise direction for pump n
nRL
Set anti-clockwise direction for pump n
nDOxxxxx,yyy
Set dose for pump number n in tachometer pulses (note 3)
nRS
Show status for pump number n (note 4)
nZY
Show status if pump n STARTed 1 or STOPped 0
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 )
1
n = pump number set in Setup. For the command to operate on all
networked pumps simultaneously, use # before the command.
2
1284 tacho pulses per revolution of pumphead rotor on 220rpm version.
3200 tacho pulses per revolution of pumphead rotor on 55rpm version
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 1/5 of a revolution on a 220rpm
drive).
4
A show status command will prompt the 505Du 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 505Du 0.7 505l 1.6mm 53.5 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
Remote control
Never apply mains voltage across any pins on the 25D socket as
permanent damage, not covered by warranty, will result. Up to 30V may
be applied across pins 4 and 17, and 5v TTL on pins 7 and 5, but no
voltage should be applied across other pins because permanent
damage, not covered by warranty, may result.
Notes on control
codes