4
Operating elements and displays
4.1
Status-LED (STAT)
Color
Meaning
Comment
Green
OK
LED is on: Ready
Red
Initialising / Bus
error
LED is on: Ring circuit not closed, receiver signal interference
or ring not configured
4.2
SERCOS-LEDs (TX and RX)
Color
Meaning
Comment
Yellow
TX: Transmit
LED is on: At transmission activity
Green
RX: Receive
LED is on: On receipt of frames
Operating elements and displays
FM 280/A
© KEBA 2011
Project engineering manual V1.02
14