VISA run in Fieldpoint Problem ?

[trinhvu]

Hi,

I am using compact Fieldpoint cFP-2120 building SCADA System,  data acquisition from Sensor using VISA ( COM3 on cFP-2120) and use Modbus Protocol, I'm being seen problem. On the system starup, communication using VISA working,data send good idea, but then distance 2 minutes, communication using VISA suspend distance 30 second, then system continue run normaly,  the data in distance of time suspend system, continuous send to COM very quickly (data queue)

I'm attack my VI Labview Real Time (run in cFP-2120, Labview Application VI run to PC),

Please help !!!!

Thank you very much

( Sorry if you don't understand content question, I 'm not good writing English . I'm using Google Translate 🙂

[RavensFan]

Perhaps you mean "length of time".  There is no such thing as "distance of time".

Is there a reason you are closing the com port on every iteration of the inner for loop?

Do you know you can expand the Index Array function downwards to get multiple outputs in sequential order?  You don't need multip Index Arrays and have an index wired into each one.

You can also bind network shared variables to cFP channels.  So there is usually no need to explicitly do a fieldpoint read and then write that value to a global variable.