ABB Advant controller AC450 network hub,Generated fault i/o failure alarm frequently.
At our plant threre is Two gas turbine and one steam turbine. All have abb control system. In GT AC 160 Controller connect two AC450 and same for Steam Turbine. AC 450 Processor connect the network control hub of all system like two GT,One st,two HRSG and BOP.
Suddenly I/O Failure alarm generated in Both Gas turbine and Steam turbine.
Long time ago I have some problems with MB300/GCOM network card model CS513/CI543/DSCS140/DSCS150. We try to use two different models of AUI/Ethernet interface, but just one work (Allied Telesyn Centrecom Mx26F).
You can get more information if you enable system message log in the On line builder.