BECKHOFF EK1914 - Manual (Page 38)

Operation
36 EK1914
4.4.1.3 Diag 2 (red) flashing code
In the case of an error, the Diag 2 LED displays a flashing code that describes the error in more detail.
The flashing codes are structured as follows:
Flashing sequence Meaning
Rapid flickering Start of flashing code
First slow sequence Error code 1
Second slow sequence Error code 2
Third slow sequence Error code 3
fourth slow sequence Error code 4
Start Error code 1 Error code 2 ...
The errors indicated by the following flashing codes are reversible. After rectification of the error cause,
the Bus Coupler can be put back into operation with a restart.
Diag 2 LED
Flashing
Code Meaning Remedy
2-1-1-1 The temperature has exceeded the maximum permissible
temperature (µC1) Ensure observance of the
permissible ambient
temperature.
3-1-1-1 The temperature has exceeded the maximum permissible
temperature (µC2)
4-1-1-1 The temperature has fallen below the minimum
permissible temperature (µC1)
5-1-1-1 The temperature has fallen below the minimum
permissible temperature (µC2)
If another flashing code is displayed, there is an internal coupler error that has stopped the Bus Coupler.
In this case the Bus Coupler must be checked by Automation GmbH & Co. KG.
Note
Note flashing codes; return the Bus Coupler
Note the flashing code displayed and include this information with the Bus Coupler
when you return it.