communication loss with slow node browsing

[turbotater 0]

5/04 DH+ using a pcmk card dell laptop d630 XP . I am having a symptom where I have a loss of communications and when I open rs linx the bar that displays the browsing node will sometime be stalled at random numbers and it will lose communication and then after a short period of time it will start browsing at a normal rate and will establish communications again without any input from me. The indicator lamp on the processor card is staying on solid and I thought it blinked as it communicated with the laptop. Any ideas as to how to have a stable connection?

[Ken Roach 194]

Can you read the Diagnostic Counters in RSLinx Station diagnostics ? It sounds like a loose connector or some electrical noise. DH+ LEDs are always steady when the device is connected to a network, or flashing slowly if it is not. They don't "flicker" with transmission like some serial networks do.