I can't comunicate with two fieldpoint chains from one pc

[russ]

I have two separate labview programs which use different serial ports (com8 & com9) to communicate with two separate sets of fieldpoint hardware. Each works fine on it's own. When I run both from the same PC, the second to start always receives a 'Can't bind to com port' error from the FP create tag.vi. Both programs are using different .iak files which only reference their own com port.

[Aaron_G]

The FieldPoint Server, which is launched wheen you run the FP Open.vi can only have on instance running in memory. You can not have multiple servers running simultaneously, which is what your programs are attempting to do. Merge both IAK's into a single IAK that each program will access. Each Comm Resource (one for Com8 and one for Com 9) should be given a unique name.

Regards,
Aaron

[russ]

Thanks Aaron,
That has done the trick. Each separate Labview program still calls FP open.vi but for the same .iak file, so I guess only the first starts up the server.
Cheers Russ