I'm trying to get started with data logging for an Inficon XTM/2 deposition monitor. I'm in the first stages of learning how to do anything with Labview, so all I wanted to do was send a message to the monitor and receive a response. The XTM/2 manual says that I should send a message which is:
I should then receive:
message_string ACK or error_code NAK
What I have is the above send message sent as a string into the write buffer of a VISA Write Icon. The VISA Write Icon also has a VISA Resource Name Constant attached to the Visa Resource Name of the VISA Write Icon, and I have COM 1 selected since I am trying to connect to the XTM/2 via the com1 port and an RS232 cable. The VISA Write Icon is connected to a VISA Read Icon, which is also connected to the Visa Resource Name via the Dup VISA Resource Name wire from the VISA Write Icon. I also connected the error out from the VISA Write to the error in of the VISA Read. I have a numeric value of zero connected to the byte count of the VISA Read, and the read buffer from the VISA Read is connected to a string indicator. When I run the program I get a flashing light on the front of the XTM/2 that says "RECEIVE," but I don't get anything sent to the string indicator on the Labview Screen. Any ideas of what I did wrong?
Thanks for the help!