I have 4 Micrologix 1000's all connected together via 1761-net-aic's using DH-485. I want to use a MSG block to read one of the other PLC's or Write. When I attempt to do a simple read of a single N7 register it faults all except the plc with the MSG block. I get a EEPROM Corrupt fault and have to reload the programs. Any ideas?