Diagnostic LEDs

Diagnostic LEDs 1:

Ethernet interface X001

Interface X001	Ethernet (CX8095)	Meaning
LED green	on	Link present
LED yellow	flashing	Activity

Ethernet interface X101 and X102

Interface X101-102	Ethernet (CX8095)	Meaning
LED green	flashing	Activity
LED yellow	is not used	-

LED coupler

Labelling	Meaning	Color	Meaning
TC	Displays the TwinCAT mode	red	TwinCAT in Stop
		Green	TwinCAT in Running Mode
		Blue	TwinCAT in Config Mode

Labelling	Color green	Color red	Meaning
MS	off	off	no EtherNet/IP slave configuration on the CX8095.
	on	off	All configured IO assemblies are in data exchange with the EtherNet/IP master. All connections are in the run state (cyclic exchange of valid process data).
	fast blinking (100 ms)	off	Watchdog error, EtherNet/IP scanner connection lost.
	off (1 s) on (200 ms)	off	No connection or faulty connection to the scanner.
	flashes (400 ms)	off	One of the EtherNet/IP slaves has no valid IO assembly configuration.
	off	off (1 s) on (200 ms)	A general error occurred with the EtherNet/IP slave.
	off	on	Internal error.

Labelling	Color green	Color red	Meaning
NS	off	off	No link detected.
	on	off	The CX8095 has detected a link and was configured.
	flashes (400 ms)	off	At least one Ethernet port has an active link and a configured EtherNet/IP Slave interface has no valid IP address configured.
	off (1 s) on (200 ms)	off	All configured EtherNet/IP slaves have a valid IP address configuration. UDP and TCP Layer was initialized.
	off	on	Internal error.
	off	off (1 s) on (200 ms)	A general error occurred with the EtherNet/IP slave.

LED power supply terminal

Diagnostic LEDs 2: Diagnostic LEDs 3:

Operation with K-bus terminals Operation with E-bus terminals

Display LED	Description	Meaning
1 Us 24 V (top left, 1^st row)	CX80xx supply voltage	connected to -24 V
2 Up 24 V (top right, 1^st row)	Power contacts supply voltage	connected to -24 V
3 L/A (left center, 2^nd row)	EtherCAT LED	flashing green: EtherCAT communication active connected to E-bus / no data traffic not connected to E-bus
4 K-BUS RUN (right center, 2^nd row)	K-bus LED RUN	Lights up green: K-bus running, everything OK
6 K-BUS ERR (bottom right, 3^rd row)	K-bus LED ERR	Lights up red: K-bus error - see K-bus error code

K-bus error code

Error code	Error code argument	Description	Remedy
Persistent, continuous flashing		EMC problems	Check power supply for undervoltage or overvoltage 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)
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 9010 is connected.
5 pulses	n	K-bus error in register communication with Bus Terminal n	Exchange the n^th 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)
	8	Internal data error	Perform a hardware reset on the Bus Coupler (switch off and on again)
7 pulses	0	Process data lengths do not correspond to the configuration	Check the Bus Terminals for the configured Bus Terminals
7 pulses	1..n	K-bus reset failed	Check the Bus Terminals