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Please check the state of the diagnostic leds on the module below. This should give an idea what is wrong. perhaps a power supply issue on the cbus or KNX side
- D4 "RDY" (Green) - Indicates Power On.
- D5 "IN0" (Red) - Blinks when CBUS telegram is received from CBUS.
- D6 "OUT0" (Red) - Blinks when CBUS telegram is sent to CBUS. Remains on when no acknowledgment is received from CBUS after outgoing telegram.
- D7 "ERR0" (Red) - Steady when CBUS is not connected or CBUS power supply is not on, or when the CBUS interface is not initialised or has an initialisation error. D7 flashes continuously when the EEPROM is blank, ie unprogrammed. Both D7 and D10 both flash continuously if the U2 EEPROM is not present.
- D8 "IN1" (Red) - Blinks when KNX telegram is received from KNX.
- D9 "OUT1" (Red) - Blinks when KNX telegram is sent to KNX. Steady when no acknowledgment is received from CBUS after outgoing telegram.
- D10 "ERR1" (Red) - Steady when KNX is not connected or KNX power supply is not on, or when the KNX interface is not initialised or has an initialisation error. Both D7 and D10 both flash continuously if the U2 EEPROM is not present.
- D11 (Green) - blinks when data is received from the USB Port.
- D12 (Red) - blinks when data is sent to the USB Port.
- LD1 (Red) on CBUS Submodule. On when Burden is enabled
- LD2 (Red) on CBUS Submodule. ON Steady when idle, Blinks during CBUS communication.
- LD3 (Green) on CBUS Submodule. OFF when Network Voltage is low or Clock is not present. ON Steady when Voltage and Clock are present. Flashing when Bus Voltage is marginal (15-20V)
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