Dear all,
I am using Siemens S7-300 for the first time.
The CPU is 315-2PN/DP.
That CPU is showing LED BF1 always on.
Can anybody help me to get the all LED describtion for Diagnosys?
Thanks in Advance!
BF stands for Bus Fault. in your case error on bus 1.
for more information take a look at the siemens manuals. for example S7-300 CPU 31xC and CPU 31x, Technical Specifications