The following figure shows an example of the LEDs of the PROFINET IO design:
[1]
"F-ERR" LED
[4]
"BF" LED
[6]
LED "L/A" Port 1
[2]
"F-RUN" LED
[5]
"US1" LED
[7]
LED "L/A" Port 2
[3]
"DRIVE" status LED