Communication Protocol with RS485 and Yokogawa UP351

[Wayne.C]

Here are the images you requested.

[arbit]

Thank you for the images. I tried the same but it is still not working. I am getting a byte count of 0 for the Bytes at Port.
I have attached a screenshot of the vi.

[Wayne.C]

Have you tried communicating with this using another software package to verify that your port and cabling is correct?

Which communications format are you using?  PC Link or Modbus?

What command are you trying to execute?

What is the actual string you are writing via the VISA write?

[arbit]

Communicating via the LL100 software works fine. I am using PC Link.
I am using the same command \0201010INF6\03\r
When I hardwire 6 as the bytecount, the visa read operation times out

[Wayne.C]

Are you sure that your string control on the front panel is set for "\" display?

[arbit]

i did not understand your question
how do i set it?

Message Edited by arbit on 08-02-2007 01:16 PM

[Wayne.C]

Some of the characters you need to send to the controller are "non-displayable" in a normal string control/indicator.  If you right click your front panel string control a drop down menu will appear.  One of the options is "\" display. 

See this for more info.  http://zone.ni.com/reference/en-XX/help/371361B-01/lvhowto/backslash_codes_display/

[arbit]

Thanks a lot. It works now!!!!

[arbit]

Thank you very much for your insightful and patient help.

[Wayne.C]

You are most welcome and thanks for letting me know you got it working.