I have 3 banks of terminals. All three banks use a FP-1600 module as the network interface. All three banks operate when I power the modules. However, after roughly 15min to a half hour, bank number 1 experiences a continuous red blinking status error, followed by total communication loss to Labview (there is still power to the terminal). The only way to re-establish communication is to cycle the power. This bank contains 3, AO-200 modules; 1, AO-210 module; 2, AI-111 modules; 1, AI-110 module, and 1 RLY-420 module. All modules are powered the same, and the others have never lost communication.