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5. Diagnostics and error handling
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Festo GDCC-CECX-K-D1-EN en 0802a
5.2.3
Status display for the CECX-D-14A-2
There is a status LED for each channel. This LED indicates the status of the signal.
LED
Description
Status LED
(orange)
LED lights up: Channel logically 1 (signal present)
LED does not light up: Channel logically 0 (no signal)
Table 5.4 Status LED for digital outputs
5.2.4
CAN status LEDs (reserved for extensions)
The central module has the following two CAN status LEDs on the front:
LED
Description
RX (green)
LED lights up briefly when receiving a CAN message.
TX (yellow)
LED lights up briefly when sending a CAN message.
Table 5.5 CAN status LEDs
5.2.5
Ethernet status LEDs
There is a link status LED (green) and an activity LED (yellow) on the Ethernet socket (RJ-
45). These LEDs light up when sending or receiving telegrams.
LED
Description
Link status (green) LED lights up as soon as an Ethernet connection is available.
Activity (yellow)
LED lights up when sending and receiving data.
Table 5.6 Ethernet status LEDs
5.2.6
Compact Flash status LED
Beside the Eject button is a status LED for the Compact Flash card. This LED lights up
when the system is accessing the memory card.
LED
Description
Status LED (red)
LED lights up red when the Compact Flash card is being accessed for writing/reading.
LED does not light up if the Compact Flash card is not being accessed for writ-
ing/reading.
Table 5.7 Status LED Compact Flash