filedpoint / labview use of digi port server

[andrews]

Has anyone accessed digi terminal severs from fieldpoint hardware to increase available rs-232 ports to fieldpoint.  I have found the NI equivalent product (enet) solution http://zone.ni.com/devzone/conceptd.nsf/webmain/850F5C45DB8A80AD86256E62007EE351

but since we already have some of the digi products here (TS4) I would like a solution to use them.

Any hints or directions I can look for resources???

Thanks

Andrew

[Sean_C.]

Hello Andrew,

It will not be possible to access the TS4 as a normal COM port (COM3 for example) because you cannot load the TS4 driver onto the FP controller.

However, it might be possible to communicate via low-level TCP/IP VIs.  You would need to consult the TS4 User Manual to see if this is possible, and if so, how to send commands to the device.

I hope this helps.

Regards,
Sean C.

[andrews]

Thanks Sean,

This is the conclusion I had come to as well.  I tried TCP/IP and it worked.  however only one connection possible at a time.  Then I moved on to UDP.  I can connect with multiple machines to read the data stream.  Yes, UDP has no "guarantee" of getting the data through.

Here is what I have so far.
Test setup
Serial device:   Climatronics Tachmet weather station - provides a 1 second output of inst Id/ws/wd/temp/rh/press/volts.
Server:    Digi  One SP - setup for UDP multibroadcast to X.X.X.255 on port 210X
VI - opens multiUDP on 210X.  Reads UDP and filters the port for 2101 (Server broadcasts on this port only) and server IP.


Seems to work.  I have a couple of machines both reading from it simultaneously.

Comments and suggestions are welcome.

Here the test VI

Andrew S.

Message Edited by andrews on 09-30-2005 09:53 AM