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7/24/2013 7:07 AM | |
Posts: 107 Rating: (0) |
Hi, we have cpu s7-400 ( 412-2 ) with 4 module card FM POSITIONING ( 451-3AL00-0AE0 ) with problem , all of RED LED LIGHT ON for fault signal but I trace with PLC the CPU not mention about this fault but the module FM said error "EXT FAULT" and "NO EXT 24V AUXILIARY VOLTAGE " ( see attachement for fault and status ) Please help me to solve this problem because I try to replace one of this modle FM with new spare, but also the same result LED fault ACTIVE. I am sure that all these 4 FM MODULE should be OK but what is the external problem that make of RED LED FM module active ? Regards, INDRA
AttachmentFM MODULE.zip (338 Downloads) |
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