BECKHOFF CX1000 - Manual (Page 39)

Error handling and diagnostics
Embedded PC 37
5. Error handling and diagnostics
CPU base module
LEDs of the basic CPU module
Display LED Meaning
PWR Power supply
The Power LED comes on when the device is connected to a live power supply
unit.
Link LAN Link 10 MBit
This LED comes on when the network speed is 10 MBit or 100 MBit (if the device
is part of a network).
100MBit LAN Link 100 MBit
This LED comes on when the network speed is 100 MBit (if the device is part of a
network).
Activity Transmit /Receive Packets
This LED flashes once when data packets are being transferred within the LAN.
HDD Read/Write Compact Flash
Indicates access to the CF card.
Network speed LED
 The LINK LED comes on when the network speed is 10 MBit or 100 MBit.
 The 100 MBit LED comes on when the network speed is 100 MBit.