Hi everyone, I'm trying to write a simple-ish VI to automate the programming of Teledyne Isco syringe pumps (the user inputs a function, time duration and number of steps and the program generates the pressure/flow values and uploads them automatically) That part is simple enough, just some basic maths and a 1-D array, however when I format the requisite string to send to the pump, it returns the error: "R018PROBLEM=INVALID OPERAND 77" I'm pretty sure this is a formatting issue, otherwise I'm fairly sure I'd be getting invalid command rather than operand, and sending other strings like G& and LOCAL result in the correct response from the pump, I can manually set pressures, run and stop the pump etc, so the connection is just fine. the test string I'm trying to send is: “LGUL,F:01,S:01,I:05000,F:05155,D:0001.0,” According to the manual for the pump, that is the correct formatting, but there is little guidance on resolving the problem code Anyone with any experience using these devices care to offer some advice? thanks in advance

LabVIEW

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yes, turns out that even though the manual writes the number must be in the format '0000.0' it actually wants '000.0'

also even if the pump is set to kPa rather thanPSI, you still need to enter the steps in PSI

thanks for the help guys

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