mgman

We did default the processor (ie go to factory default settings), and it did remedy the problem, but this doesn't tell us how this may have happened. I'm just curious as to why it happened and how we can prevent it from happening again. Thanks for your help. We tried looking everywhere on the internet and knowledgebase and everywhere else. We may just have to call Rockwell, I will let you know what I find. M

ok, here is the precise sequence: (LED's listed are ON in that step.) Power on: 1: FLT 2: RUN, FLT, BATT, FORCE, DH+ (green), RS232 3: FLT 4: DH+ (yellow) 5: DH+ (green) 6: DH+ (red) 7: RUN, FLT, BATT, FORCE, DH+ (green), RS232 8: DH+ (yellow) 9: RUN, FLT, BATT, FORCE, DH+ (green), RS232 10: pause 11: goto 3 M

It was found that after starting back up that the battery was quite old. We replaced it with a new one, and it still cycles. M

We are using a SLC5/04 (1747-L542 ser. B proc. rev. 3). It had been powered down for a couple of weeks for a UPS power supply change. When it was powered back up it would not operate or communicate with a PC. The LEDs are cycling such that it appears to be repeating the Power Up Cycle. The LED Sequence starts: FLT, ALL And then repeats: FLT, DH+ yellow, DH+ green, DH+ red, ALL, DH+ yellow, ALL, OFF, pause and repeat We have tried to connnect with DH+ and with DF1 with no success. Autoconfigure in RSLinx does not work. Fortunately we had a spare processor, but we are now trying to determine the problem with this one. Any idea to the cause or solution for this?? Thanks in advance. M