E-Bus; Table 18 Diagnostic Leds In K-Bus Mode - Beckhoff CX8190 Manual

Error handling and diagnosis
9.3

E-bus

The power supply unit checks the connected EtherCAT Terminals. The "L/A" LED is lit in E-bus mode. The
"L/A" LED flashes during data transfer.
Table 18: Diagnostic LEDs in K-Bus mode.
Display
62
LED Meaning
Us 24 V Power supply for basic CPU module. The LED lights
green if the power supply is correct.
Up 24 V Power supply for terminal bus. The LED lights green if
the power supply is correct.
L / A off E-bus not connected.
on E-bus connected / no data traffic.
flashes E-bus connected / data traffic on the E-bus.
Version: 1.5 CX8190