LED I/O ERR - Lo-
The bus communication LEDs show the local communication between the fieldbus coup-
cal Error
ler and fieldbus terminals. The green LED lights up when there are no errors. The red
LED flashes at two different frequencies when a terminal bus error occurs.
Error code
1 pulse
2 pulses
3 pulses
4 pulses
5 pulses
6 pulses
IMPORTANT! When an error occurs during operation, the error codes are not displayed
immediately via the LEDs. The bus coupler must be prompted to diagnose the bus termi-
nals by switching it on.
(1)
(2)
Reason for error
0
1
2
0
n (n < 0)
0
0
n (n < 0)
n (n < 0)
0
n (n < 0)
(1)
Flashing quickly:
Start of the error code
(2)
First slow pulse:
Type of error
(3)
Second slow pulse:
Error location
IMPORTANT! The number of pulses
shows the position of the last fieldbus ter-
minal before the error occurred. Passive
(3)
fieldbus terminals (e.g., supply terminals)
are not counted.
Description
EEPROM checksum fault
Overflow inline code buffer
Unknown data type
Programmed configuration
Incorrect table entry / bus coupler
Terminal(s) table comparison incorrect
Terminal bus command error
Terminal bus data error
Break behind terminal(s) (0:coupler)
Terminal bus error during register com-
munication with terminal(s)
Special fieldbus errors
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