sync=true switch in fieldpoint address

[Chuck60148]

I am working on software written by an ex employee, and have run across a string connected to the connection in terminal of a datasocket write function addressing a cFP-1808 DO module that I have not run across before. It does not generate an error, but I cannot determine it's purpose. The string is: \\10.0.1.105\FP\7DO\14?sync=true. I understand the part up to the 14 - 14th output of the DO module in slot 7, etc. What I don't understand is the '?sync=true' part. Can anyone help?

Thanks.

Chuck

[margasan · Accepted solution]

Hello Chuck,

You append "?sync=true" to URL to enable synchronous operations with the PSP protocol, that is the protocol that shared variables uses, and the channel of the FP are published to the network as shared variables.

Regards

Mart G

[Chuck60148]

Hi Mart,

Thanks for the help. Do other such switches exist, and do you happen to know if there is a list of such switches or tutorial on the use of PSP/datasocket that includes switches such as this?

Chuck

[margasan]

Hello Chuck

I found some links that may help you, check them out:

http://www.ni.com/white-paper/3543/en 

http://www.ni.com/white-paper/4499/en 

http://zone.ni.com/devzone/cda/epd/p/id/4038 

Hope this helps!!

Regards

Mart G