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CPU will not go into run mode

Created by: stwalk at: 12/29/2008 6:48 PM (2 Replies)

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12/29/2008 6:48 PM	Rate (0)
stwalk Posts: 38 Rating: (0)	Hi, I have a PLC with CPU488-3 (6ES7 488-3AA00-0AB0), and the CPU will not go into run mode.The PLC crashed at the station so I had to reboot the PLCand after the reboot, the CPU stays in stop mode while the INTF LED is illuminated. The key is turned to run mode on the CPU. Has anyone seen this problem before? Thanks
stwalk Posts: 38 Rating: (0)
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12/29/2008 6:52 PM	Rate (0)
TechnoDude Posts: 47 Rating: (1)	Sounds like your program may be corrupted or worse...GONE. Do you have software to reload or to check diagnostics?
TechnoDude Posts: 47 Rating: (1)
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1/9/2009 6:43 PM	Rate (0)
stwalk Posts: 38 Rating: (0)	It turns out the the CPU went bad. I swapped out CPUs and replaced the memory card and everything is back to normal.
stwalk Posts: 38 Rating: (0)
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