Using IA OPC server 5.1 with a Application built in Labview 7.1 which is talking to SLC 5/05 I get a "Unexpected data response length" alarm which then allows no communication to the PLC. After the technician restarts the Labview application a few times it finally will connect but nothing is ever a constant on how many times this could take. The alarm section of help says " Unexpected data response length" = You will probably never see one of these alarms. If you do, call National Instruments and ask for technical support, which I tried but sounds like I get no phone support eventhough I just bought this package and it tells me to call Ni. Just trying to see if anyone else has ever run into this type of error and what if any they did for a fix. Thanks for taking time to read this post and have a wonderfully weekend.
