BECKHOFF CU8880-0000 - Manual (Page 7)

Product Description
CU8880-0000 5
LED Diagnostics
LED Diagnostics
The following table shows the possible states for the LEDs:
LED Assignment Status Meaning
off no power supply connected P20 power supply
lights green 5 V
DC
via USB-Port
off P10 Ethernet port
lights green Ethernet Collision
off P11 Ethernet port
lights yellow Ethernet full duplex
off P12 Ethernet port
lights Ethernet Link
off Ethernet Speed 10MBit P13 Ethernet port
lights Ethernet Speed 100MBit