Diagnostic LEDs

After switching on, the Bus Coupler immediately checks the connected configuration. Error-free start-up is indicated when the red I/O ERR LED goes out. If the I/O ERR LED blinks, an error in the area of the terminals is indicated. The error code can be determined from the frequency and number of blinks. This permits rapid rectification of the error.

The Bus Coupler has two groups of LEDs for the display of status. The upper group with four LEDs indicates the status of the respective fieldbus. The significance of the fieldbus status LEDs is explained in the appropriate sections of this manual. It corresponds to the usual fieldbus display.

On the upper right hand side of the Bus Couplers are two more green LEDs that indicate the supply voltage. The left hand LED indicates the presence of the 24 V supply for the Bus Coupler. The right hand LED indicates the presence of the supply to the power contacts.

LEDs for power supply diagnosis

LED	Meaning
LED Us	off	The power supply voltage Us is not present
LED Us	on	The power supply voltage Us is present
LED Up	off	The power supply voltage Up (for Power Contacts) is not present
LED Up	on	The power supply voltage Up (for Power Contacts) is present

LEDs at RJ45

LED	Meaning
LED Link/Act	off	No physical connection present
	on	Physical connection present
	flashes	Communication available
LED 10/100 Mbit/s (BK9105 only)	off	10 Mbit/s (if LED Link/Act is shining or flashing)
LED 10/100 Mbit/s (BK9105 only)	on	100 Mbit/s

LEDs for fieldbus diagnosis

EtherNet/IP Diagnosis	EIP E (red)	EIP R (green)	DIAG E (red)	DIAG R (green)
IP Address OK	off	0,5s	x	x
No IP Address (Dip Switch 8,9 -> on)	off	off	x	x
Online	off	on	x	x
Offline PLC Stop	off	0,1s	x	x
TimeOut	0,5s	off	x	x
IP Address conflict	on	off	x	x

Configuration Diagnosis	EIP E (red)	EIP R (green)	DIAG E (red)	DIAG R (green)
OK	x	x	off	on
In data too less	x	x	Flashing*	1
In data too big	x	x	Flashing*	2
Out data too less	x	x	Flashing*	3
Out data too big	x	x	Flashing*	4
Wrong Assembly Instance	x	x	Flashing*	5
Second Master	x	x	Flashing*	6

*) Bytes are too less (missing) or to big

X: The status of the LED is not relevant for this diagnosis.

Example:

Data Length In too big 5 Bytes…

Start Error Code: Red LED is quickly flashing, green LED is Off
Red LED is ON, green LED show you the Error Code flashing 2 times (1 Sec)
Red LED OFF, green LED off
Red LED flashing 5 times (1 Sec), error argument, green LED off

Example for Error Code and Error Argument

LEDs for K-Bus diagnosis

Error code	Error 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 localized by a restart of the coupler (by switching it off and then on again)
1 pulse	0	EEPROM checksum error	Set manufacturer’s setting with the KS2000 configuration software
	1	Code buffer overflow	Insert fewer Bus Terminals. The programmed configuration has too many entries in the table
	2	Unknown data type	Software update required for the Bus Coupler
2 pulses	0	Programmed configuration has an incorrect table entry	Check programmed configuration for correctness
2 pulses	n (n > 0)	Table comparison (Bus Terminal n)	Incorrect table entry
3 pulses	0	K-Bus command error	No Bus Terminal inserted One of the Bus Terminals is defective; halve the number of Bus Terminals attached and check whether the error is still present with the remaining Bus Terminals. Repeat until the defective Bus Terminal is located.
4 pulses	0	K-Bus data error, break behind the Bus Coupler	Check whether the n+1 Bus Terminal is correctly connected; replace if necessary.
4 pulses	n	Break behind Bus Terminal n	Check whether the Bus End Terminal KL9010 is connected.
5 pulses	n	K-Bus error in register communication with Bus Terminal n	Exchange the nth bus terminal
6 pulses	0	Error at initialization	Exchange Bus Coupler
	1	Internal data error	Perform a hardware reset on the Bus Coupler (switch off and on again)
	2	DIP switch changed after a software reset	Perform a hardware reset on the Bus Coupler (switch off and on again)
	4	DIP switch incorrect for BootP	Set 1-8 to on or off, see BootP
	8	Internal data error	Perform a hardware reset on the Bus Coupler (switch off and on again)
	16	Error in IP socket	Perform a hardware reset on the Bus Coupler (switch off and on again)
14 pulses	n	nth Bus Terminal has the wrong format	Start the Bus Coupler again, and if the error occurs again then exchange the Bus Terminal
15 pulses	n	Number of Bus Terminals is no longer correct	Start the Bus Coupler again. If the error occurs again, restore the manufacturers setting using the KS2000 configuration software
16 pulses	n	Length of the K-Bus data is no longer correct	Start the Bus Coupler again. If the error occurs again, restore the manufacturers setting using the KS2000 configuration software