Using RS 232C and DAQ 6009 to communicate and record data

[Dennis_Knutson]

The error is common and a search would have found the cause. You probably left teraterm open and windows does not allow multiple programs to access a port at the same time.

You control execution order with dataflow. A VISA Write is connected to a VISA Read by connecting the error in/put connections and the VISA references.

You have everything you need.

[priyadamico]

I don't think I understand how the basic read write vi works. How do I know the potentiostat is communicating properly?

[Dennis_Knutson]

You know it works if it responds to a query. For example, if you write a 'ver' command (without the quotes), you will get version information when you do a read. If there is a problem, you will get a timeout error.

[priyadamico]

Ok I was able to communicate. How can I acquire data in a waveform format from the VISA read?

[Dennis_Knutson]

I don't know. That would require a lot of studying of the manual. I did notice that there are examples written in basic. You might want to give those a close look. The functions to read/write are different but the actual strings sent to the instrument are going to be the same.

This is a project that could easily take an inexperienced user a couple of months to implement if you need a full driver.

[priyadamico]

Okay well thank you for all your help. I really appreciate it.