control the flow of a HPLC L - 6200A Merck - Hitachi pump

Hello

I'm trying to control the flow of a HPLC L - 6200 A Merck - Hitachi pump. I already found a VI in this forum in the post below:

http://forums.NI.com/T5/LabVIEW/HPLC-pump-feedback-control/TD-p/1612428

I put the pump switches according to the manual as I changed the pump in remote mode. Also, I adjusted my COM port settings in windows system manager according to the pump and LabView. The problem is, that the pump doesn't make any signal sent from the computer. I used "free serial port monitor" to ensure that a string is sent througt the COM port. Does anyone have an idea what could be the problem here? I would really appreciate the help. Thank you in advance,

Greetings,

Hendrik

Hey,.

Thanks for the reply. It was in fact the indicator in the right direction. I used RealTerm trying to send a signal to the pump. Apparently, the problem was the type of string, I sent to the pump. In the discussion above, the string of space was sent as "\s", but apparently it can directly be sent as "". "" Yes, it's always the small details... In any case, thanks for your help.

Greetings,

Hendrik

Tags: NI Software

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