RSLinx getting offline

[iarglez 1]

Hello, my best wishes for you all on this 2009!! I´m having the following problem: After getting connected with RSLinx Classic Gateway 2.52.00.17 using DF1 protocol with a ControlLogix CPU suddenly it get's disconnected and I have to start the connection procedure all over again! I´m using an express card RS232 serial-to-usb adapter and it does the same when using a conventional USB to SERIAL converter. I've been using this converters long ago and never have problems with them before. Is there a special card I need to use from AB to gain a reliable connection with the ContolLogix CPU's family controllers? Thanks in advance!

[TimWilborne 108]

How many messages are being executed over the Controllogix? What is the system overhead time slice?

[rcshete 0]

Maybe you might have upgraded or added a patch to the OS. Also check if you have installed the drivers for the converter properly.

[iarglez 1]

Ok! what I forgot to mention is that it doesn't happen the same using another computer, the one with the problem has WindowsXP SP3 up to date! Where can I check the overhead time slice? I can give you that info once I get it! Card drivers are ok as I can get access to other serial communication type devices. Edited 6 Jan 2009 by iarglez

[Mickey 71]

See links below SP3 could be your problem. http://rockwellautomation.custhelp.com/cgi...amp;p_topview=1 http://rockwellautomation.custhelp.com/cgi...amp;p_topview=1

[iarglez 1]

I changed SP3 to SP2. Still the same! System overhead time slice is 10%. Edited 27 Jan 2009 by iarglez