ehabs

Did Logicmaster configuration indicate "Config EQ" when you were online with the PLC? YES Is the termination resistor installed on the cable at the expansion rack? YES and already tested Have you verified expansion cable integrity? I am not sure what is that. but the cable was used before in the same system without any problems. Ho to test. * I have today a new symptom, I only get the I/O Fault when the expansion cable is unplugged. Removing the module from rack1 will not generate the fault as it did before.

Hi, I can't connect rack#1 to my CPU GE series 90 30: I have the following: - 2 rack system series 90 30 - Rack0 CPU 331 (Only LM90 firmware 3.35) - Any configuration in the main rack will work smoothly - IO reference table doesn't reflect any IO changes from IO modules in expansion rack1  - If any I/O module removed from rack1 I will get I/O fault  - I checked the configuration (modules locations, types and addresses) many times and all seems good. - I tried many I/O configurations with the same results. - Rack number Dip Switch will not generate I/O fault if mismatched with the configuration !!! is that normal? Any Idea will be highly appreciated.