Lookout4.0.1 gets hanged in this process.

[theta@vsnl.com]

Dear Sir,

We are communicating 19 PID controllers working on modbus
protocol, 5 devices working on ASCII protocol (Digital I/Os)
and six Flow totalisers running on Modbus protocol. All the
driver objects used, are inbuilt driver objects of Lookout4.0.1.

We have purchased 500 I/Os Runtime plus Development version
of Lookout4.0.1. Our problem is that the Lookout gets
automatically hanged after working for about 12 hours.

Is this a problem of using Runtime cum development version
or something different.

Waiting for your quick response...

With Warm Regards,
Girish Nalgirkar.
for Theta Controls, Pune.
India.

[Greg Caesar]

Mr. Nalgirkar,

It is fairly rare to see a case where Lookout hangs after running for such a long time. The first thing I would do is verify that 4.0.1 build 61 is being used on the runtime sysyem. You can determine the build of Lookout 4.0.1 by selecting "About Lookout" from the "Help" menu. If you do not have build 61, I would strongly recommend contacting NI to download the free upgrade. Contact National Instruments E-Mail Support through www.ni.com/ask. Make sure you mention your current version of Lookout, Serial Number, Keycode, and Purchasing Company, as NI must verify your license.

One possible cause of hanging behavior in Lookout is a problem with a hardware driver. However, since you are able to run for 12-hours with no problems, then it sounds like a hardware d
river problem is not the issue.

One other question. What operating system are you using? The general rule-of-thumb is that WinNT and Win2000 systems generally have much higher relibaily than Win95/98 systems.

Regards,
Greg Caesar
National Instruments,
Applications Engineer