We have two setups with SLC 5/03 CPU. There was a power outage at our plant and one of the two went into fault after the power was restored. The program had to be redownloaded.
The second one was working fine. Initially, I though there was a problem with the battery of the first, so the battery was replaced but with the same results. Then the card was changed but with the same results. I changed the CPU even, but to no avail.
The fault occurs like this. When the power is restored, the fault light goes on but it is solid. When a second power cycle is given, it starts blinking and only then software can be redownlaoded into it.
So what could be wrong with it?
Thanks
The second one was working fine. Initially, I though there was a problem with the battery of the first, so the battery was replaced but with the same results. Then the card was changed but with the same results. I changed the CPU even, but to no avail.
The fault occurs like this. When the power is restored, the fault light goes on but it is solid. When a second power cycle is given, it starts blinking and only then software can be redownlaoded into it.
So what could be wrong with it?
Thanks