BECKHOFF EL6930 - Manual (Page 54)

Operation
52 EL6930
4.4.1.5 Diag 4 LED (red) if Diag 3 LED (red) is not lit.
If the Diag 3 LED is not lit, the Diag 4 LED indicates the state of the TwinSAFE terminal.
Diag 3 LED Diag 4 LED: Flashing Code Meaning
off 1 flash pulse (uniform flashing) Function block error in one of the TwinSAFE
groups
off 2 flash pulses (2 pulses with longer
pause in between) Communication error in one of the TwinSAFE
groups
off 3 flash pulses (3 pulses with longer
pause in between) Function block and communication error in
one of the TwinSAFE groups
off Steadily lit Supply voltage or internal temperature of the
terminal outside the permissible range. The
diagnostic object FA00
hex
provides you with
more detailed information.
4.4.2 Diagnostic object
The CoE object FA00
hex
displays further diagnostic information.
CAUTION
Do not change CoE objects!
Do not change any of the CoE objects in the TwinSAFE terminals! Any modifications
(e.g. using the TwinCAT system manager) of the CoE objects would permanently set
the terminals to the Fail-Stop state.
Index FA00
hex
: Diagnostic object
Index Name Meaning Flags Default
value
FA00:0 Diag RO
FA00:03 Temper
ature
error 0005
hex
Maximum temperature exceeded RO 0000
hex
0006
hex
Temperature fell below minimum
0007
hex
Temperature difference between the measuring
points exceeded
Supply
error 0101
hex
max. supply voltage µC1 exceeded
0102
hex
max. supply voltage µC2 exceeded
0103
hex
voltage fell below max. supply voltage µC1
0104
hex
voltage fell below max. supply voltage µC2