Operation
EL1904 47Version: 3.0.0
Count the individual sequences of the flashing code.
The errors indicated by the following flashing codes are reversible. After successful troubleshooting the
terminal can be restarted.
Diag 3 LED Diag 4 LED
Flashing
Code
Meaning Remedy
lit 6-1-1-1 max. internal temperature
exceeded
Ensure that the permissible ambient
temperature is adhered to.
7-1-1-1 internal temperature below min.
value
2-1-2-1 max. supply voltage µC1
exceeded
Check the supply voltage.
3-1-2-1 max. supply voltage µC2
exceeded
4-1-2-1 voltage fell below min. supply
voltage µC1
5-1-2-1 voltage fell below min. supply
voltage µC2
8-1-1-1 Temperature difference between
the measuring points exceeded
Check the installation position and the
ambient temperature.
If another flashing code is displayed, this means that there is an internal terminal error that has stopped the
terminal. In this case the terminal must be checked by Beckhoff Automation GmbH & Co. KG.
Note the flashing codes and return the terminal
Note the flashing code displayed and include this information with the terminal when you return it.
5.5.2 Diagnostic objects
CAUTION
Do not change CoE objects!
Do not make any modifications to the CoE objects in the TwinSAFE components! Any modifications (e.g.
using TwinCAT) of the CoE objects will permanently set the TwinSAFE components to the Fail-Stop state.
Index FA80
hex
: Internal temperature values
The CoE object FA80
hex
indicates the current internal temperature values of the EL1904.
Index Name Meaning Flags Default
FA80:01 Temperature 1 Temperature measurement 1 RO 0
bin
FA80:02 Temperature 2 Temperature measurement 2 RO 0
bin
Index 800E
hex
: diagnostic information
The CoE object 800E
hex
displays further diagnostic information.
Index Name Meaning Flags Default
800E:0 Diag The following sub-indices contain detailed diagnostic
information.
RO
800E:0A Sensor test error Bit Error during the sensor test RO
0 1
bin
Error at input 1 0
bin
1 1
bin
Error at input 2 0
bin
2 1
bin
Error at input 3 0
bin
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