CX1100-0003 power supply LEDs

After switching on, the power supply immediately checks the connected Bus Terminal configuration. Error-free start-up is signalled by the red "I/O ERR” LED being extinguished. 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. Though the power supply supports two bus systems both bus errors are reported by the "I/O-Err" LED. An error ob K-Bus is reported by rapid blinking. One long flash (app. 2 sec.) reports errors on IP-Link-bus.

Display	LED	Meaning
	Power	Power supply The LED lights up green when the power supply is correct, but red if there is a short circuit.
I/O Run	K-Bus diagnostics / IP-Link diagnostics The green LED lights up in order to indicate fault-free operation. "Fault-free" means that the communication with the fieldbus system is also running.
I/O Error	K-Bus diagnostics / IP-Link diagnostics The red LED flashes to indicate an error. The red LED blinks with two different frequencies.

Display

LED

Meaning

CX1100-0003 power supply LEDs 1:

Power

Power supply

The LED lights up green when the power supply is correct, but red if there is a short circuit.

I/O Run

K-Bus diagnostics / IP-Link diagnostics

The green LED lights up in order to indicate fault-free operation. "Fault-free" means that the communication with the fieldbus system is also running.

I/O Error

K-Bus diagnostics / IP-Link diagnostics

The red LED flashes to indicate an error. The red LED blinks with two different frequencies.

The I/O error LED blink code
Fast blinking	Start of the error code
First slow sequence	Error code
Second slow sequence	Error code argument

LEDs for K-Bus diagnosis

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 power supply (by switching it off and then on again)
1 pulse	0	EEPROM checksum error	Revert to the manufacturer’s setting
	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 power supply
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 power supply	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 nth bus terminal
9 pulses	0	Checksum error in Flash program	Revert to the manufacturer’s setting
9 pulses	n (n>0)	Bus Terminal n is not consistent with the configuration that existed when the boot project was created	Revert to the manufacturer's setting which will clear the boot project.
14 pulses	n	nth Bus Terminal has the wrong format	Start the power supply 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 power supply up again.
16 pulses	n	Length of the K-Bus data is no longer correct	Start the power supply up again.

Error code argument

The number of pulses indicates the position of the last Bus Terminal before the fault. Passive Bus Terminals, such as a power feed terminal, are not included in the count.

In the case of some errors, rectification does not cause the power supply to leave the blink sequence. The power supply can only be restarted by switching its supply voltage off and on again.

Note:

The supply voltage of the power supply unit, which is necessary to supply power to the CX1000 system, must not be interrupted in the middle of operation. Switching off the supply voltage to the power supply unit refers here to the power supply on the power contacts.

LEDs for IP-Link-Bus-Diagnosis

After a long flash (app.. 2 sec.) an IP-Link-Bus error has occurred. The following tables describe the error codes and help to find the reason for the error. IP-Link errors most often turn out to be a result of inappropriate use of the optical fiber.

I/O Err			Description	Remedy
off			No data exchange	Module in synchronous mode or - activate Profibus cyclic data
1	0		EEPROM checksum error	Set manufacturer’s setting with the KS2000 software
2			Reserved	-
3			Break location has been recognized	interruption before the master's receiver
3	n		Break location has been recognized	n-th module before the master's receiver
3	n	m	Break location has been recognized	(n*10)+m-th module before the master's receiver
4	n		Too many faulty telegrams have been detected (more than 25%)	The optical fiber wiring in front of the nth extension module should be checked
5	n		Register access to complex modules has failed	Check the nth module
11	n		Complex module working incorrectly	Exchange the nth module
12	n		More than 120 modules in the ring	Connect fewer modules
13	n		nth module unknown	Firmware update required
off			Module is exchanging data	no error

If an error occurs on both terminal busses (K-Bus and IP-Link-Bus) the error on K-Bus is reported at first. The IP-Link-Bus error is reported as second. Both error codes are introduced by their typical blink signal.