How do I start communication with inficon XTM/2 deposition monitor?

How do I start communication with inficon XTM/2 deposition monitor?

Post by PietC » Fri, 02 Mar 2007 03:10:12


Hi! 
 
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:
 
message_string ACK  
 
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!
 
Piet
 
 
 

How do I start communication with inficon XTM/2 deposition monitor?

Post by PietC » Fri, 02 Mar 2007 05:10:10

Dennis,
Thanks for the help!  I put in the \06 command and I am now getting something back from the XTM/2, but only if I put in 0-4  bytes into the byte count on the VISA Read Icon.  Also, what I get out on the output on my front panel is:
 half-circle square half-circle square
Do I need to convert the output from the VISA Read Icon before I send it to the String Output Icon?
Thanks for the help!
Piet

 
 
 

How do I start communication with inficon XTM/2 deposition monitor?

Post by PietC » Fri, 02 Mar 2007 14:40:07

Thanks for all of the help so far!
I now have the lines of communication open with the XTM/2 and I am getting the value that I should back (2.297 kA), but I am now having trouble logging the data.  I was trying to output the time and the reading (2.297 kA) to a spreadsheet, but when I open the spreadsheet there is only one data point with one reading and one time.  I don't know if the others are being over written, and if so how I would stop that?  I also was curious to know how to define the frequence of data logging (say one data point every 0.5 seconds).  Attached is the file that I tried to write!
Thanks for the help!
Piet


XTM2_V_1.26.vi:
http://www.yqcomputer.com/
 
 
 

How do I start communication with inficon XTM/2 deposition monitor?

Post by PietC » Sat, 03 Mar 2007 05:40:09

Thanks again for the help!  You are definitely right, I do need some Labview training!
Thanks again!
Piet