VISA Serial question

[Jim Morrison]

When doing a VISA write on the serial port is a line feed always
appended to every string sent?

Jim

--
"Those who make peaceful revolution impossible
will make violent revolution inevitable."
--John F. Kennedy

[Chris_Rake]

You need to disable the termination character when you initialize the serial port.

[RossC]

Jim,

Thanks for contacting National Instruments.

While it is possible to configure the VISA Write to append a termination character, this is not the default behavior.

Here is a link to the document which describes how to do this:
Adding a Termination Character to VISA Serial Writes

The VISA Configure Serial Port also has inputs which address the termination character. However, the Enable Termination Char input enables the termination character for VISA Reads only. This means that the VISA Read will stop reading after it receives the termination character. To make the VISA Writes automatically append a termination character, follow the procedure
linked above. Also, the Line Feed character is the default termination character, but that can be modified using the Termination Char input. The value for a Line Feed is 10, and the value for a Carraige Return is 13.

I hope this explains your question, if you need further clarification feel free to reply.

Sincerely,

Ross C
National Instruments
Applications Engineer