BECKHOFF BK7500 - Manual (Page 18)

Basic information
18 BK7500
Terminal bus error
Error code Error code
argument Description Remedy
Persistent,
continuous
blinking EMC problems - Check power supply for overvoltage or
undervoltage peaks
- Implement EMC measures
- If a K-bus error is present, it can be
localised by a restart of the coupler (by
switching it off and then on again)
1 pulse 0
1
2 EEPROM checksum error
Inline code buffer overflow
Unknown data type - Set manufacturer’s setting with the
KS2000
- Connect fewer terminals; too many
entries in the table for the programmed
configuration
- Software update required for the coupler
2 pulses 0
n (n > 0) Programmed configuration
Incorrect table entry / bus
coupler
Incorrect table comparison
(terminal n) - Check programmed configuration for
correctness
- Incorrect table entry / bus coupler
3 pulses 0 Terminal bus command error - No terminal connected; attach terminals.
- One of the terminals is defective; halve
the number of terminals attached and
check whether the error is still present with
the remaining terminals. Repeat until the
defective terminal is located.
4 pulses 0
n Terminal bus data error
Break behind terminal n (0:
coupler)0
n
- Check whether the n+1 terminal is
correctly connected; replace if necessary.
– Check whether the end terminal 9010 is
connected.
5 pulses n Terminal bus error with register
communication with terminal n Replace terminal n.
6 pulses 0
1
2 No ident of the MDT
No ident of the AT
Ident im MDT ans S370
konfigurated
7 pulses
Klemme wird vom Koppler nicht
unterstützt
Fieldbus error
Fieldbus error
The fieldbus status LEDs indicate the operational state of the fieldbus. The
functions of the SERCOS are indicated by the LED "PHASEL", PHASEH",
"LWL" and "DIAG".
The meaning of the first 4 LED`s:
PHASEL Communication phase low
PHASEH Communication phase high
DIAG without function
LWL
shows quality of the fibre optic connection