I have a friend of mine that just called me from CA.
All the lights on the SLC 5/04 are flashing around like the CPU is in infinite reset.
They are out in field and dont have the laptop with them
When they put the processor in PROGRAM it stops cycling the lights and appears to act ok, Once he puts it back in RUN mode, ALL the lights are flashing
Any ideas?
Thanks
Full Version: SLC 5/04 Lights are flashing in RUN Mode
Obviously that's not normal.
If they can make some notes about which LEDs, what color they are flashing, and in what sequence, that might help characterize precisely what is going on inside the controller.
All indications point to a failed controller, though. I've seen LED patterns I don't recognize when an OS update failed, and I've seen them when a DH+ daughtercard failed. Regardless of the reason, the likely solution is replacement of the controller.
If they can make some notes about which LEDs, what color they are flashing, and in what sequence, that might help characterize precisely what is going on inside the controller.
All indications point to a failed controller, though. I've seen LED patterns I don't recognize when an OS update failed, and I've seen them when a DH+ daughtercard failed. Regardless of the reason, the likely solution is replacement of the controller.
QUOTE(Ken Roach @ Jan 10 2008, 07:11 PM) [snapback]63637[/snapback]
Obviously that's not normal.
If they can make some notes about which LEDs, what color they are flashing, and in what sequence, that might help characterize precisely what is going on inside the controller.
All indications point to a failed controller, though. I've seen LED patterns I don't recognize when an OS update failed, and I've seen them when a DH+ daughtercard failed. Regardless of the reason, the likely solution is replacement of the controller.
If they can make some notes about which LEDs, what color they are flashing, and in what sequence, that might help characterize precisely what is going on inside the controller.
All indications point to a failed controller, though. I've seen LED patterns I don't recognize when an OS update failed, and I've seen them when a DH+ daughtercard failed. Regardless of the reason, the likely solution is replacement of the controller.
Thanks Ken,
It appears that It's repeating the start up sequence over and over.
I suggested cycling power.
verifiy the battery
Do a upload and go online to verify any possible errors, but usually in my experience you will get a FAULT on the CPU if thats the case.
I think they are going to try to wipe the processor (VBB /GRD) and try to re-download.
If that doesnt work then it's more than likely the SLC is faulty.
The processor is quite old, so maybe its time.
I'll post what they find
I'm presently in Maryland tryin to help a California bud
Thanks again Ken
Do you think it could be "Fault ..Fault routine... Reset... Fault... Fault routine...Reset..."?
Could it be a power supply problem?
Maybe a shorted input or an output, pulling the supply down to a point that shuts it down?
Maybe a shorted input or an output, pulling the supply down to a point that shuts it down?
The decision was made to replace the SLC 5/04 because of its age.
They downloaded the RSLogix file, and everything appears to be ok.
They downloaded the RSLogix file, and everything appears to be ok.
QUOTE(mracer @ Jan 11 2008, 09:29 PM) [snapback]63684[/snapback]
Could it be a power supply problem?
Maybe a shorted input or an output, pulling the supply down to a point that shuts it down?
Maybe a shorted input or an output, pulling the supply down to a point that shuts it down?
Well the demon came back, and I suggested checking the power supply, and indeed it was the power supply. The power drop was enough to cause the SLC to go into infinite cycling of start-up reset.
They replaced the power supply, problem solved
mracer called it first
Good job mracer!!!!
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