No Error Disconnecting FP1600 Bank from LAN

[Golzio]

I'm using LabVIEW 7.0 with Fieldpoint 4.0.1 with 5 FP-1600 banks. I'm developing a system to manage FP error and yesterday I notice this strange behaviour: when I disconnect the ethernet cable from a bank the FP Read.vi doesn't show any error from that bank. MAX from NI correctly shows the error but this is not happen in LabVIEW. I maked I several trials and I try to use the NI example shipping with LabVIEW too, but I have exactly the same strange behaviour.
As further information:
1)if the cable remains disconnected and I close LabVIEW the programs hungs up!!!
2)the same FP hardware is working fine with old LabVIEW 5.1.1 but we buy new LabVIEW 7.0 and we want to migrate on this new version.

Best Regards
Alessio Colzi

[Bill B]

Alessio,

I tested LabVIEW 7.0 with FiedPoint 4.0.1, FP-1600, and FP-TC-120. I did a simple FP Read in a while loop and monitor the temperature of a thermocouple. I also monitored the error output of the FP Read.vi. I noticed that when I disconnect the cable, the error cluster generates this error:

Error Code: 33163
Description: Check cabling, power, etc. : FP Read.vi

The error cluster does not change the error Boolean to true, but leaves it as false. This is done, because you may not want your program to stop if the network cable becomes disconnected.

You will need to monitor the error code element of the error cluster and check for error code 33163. You can use the Unbundle by Name function to split the error cluster into its three components.


Regards,
Bill B
Applicaions Engineer
National Instruments

[Golzio]

I know what you explain to me, but in my case there was no messagge from error (any warnig or error!!).
I discovered later that It depends on the PC. I maked several trials with the same OS on different PC and the behaviour was excellent.
Thank you for your help

Best Regards
Alessio Colzi