LED indicators - meanings

LED indicators - meanings 1: — LEDs of the ELM terminals

LED	Color	Meaning
RUN	green	off	State of the EtherCAT State Machine: INIT = initialization of the terminal
		flashing	State of the EtherCAT State Machine: PREOP = function for mailbox communication and different standard-settings set
		single flash	State of the EtherCAT State Machine: SAFEOP = check the channels of the Sync Manager and the Distributed Clocks (if supported)
		on	State of the EtherCAT State Machine: OP = normal operating state; mailbox and process data communication is possible
		flickering	State of the EtherCAT State Machine: BOOTSTRAP = function for firmware updates of the terminal

LED	Color	Meaning
OK (1…n)	green	No error
	red	Error display, along with error bit in the status, for Measuring range error (not for underrange/overrange!) Set measuring type is not calibrated (see CoE object 0x80nF PAI Vendor Calibration Data) Processor overload (see CoE object 0xF900 PAI Info Data) ADC in "saturation" Analog circuit "in overload", over voltage detected at inputs; see section "StartUp - what is the action for...“ and notes in section ”Common technical data”. Oversampling Error in Synchron Mode
	flashing	Active self‑test of terminal; see chapter ELM Features/ Self-test and self-test report
	off	No operation

The status of the optical displays (LEDs) in the device can be read out electronically in CoE 0xF915 LED Status, e.g. for simultaneous LED display in the visualization.

These are four bytes that describe the RGB value and the light status:

LED indicators - meanings 2:

Byte 1 (from left to right): Flashing/lighting code

0x00: Off/ not available
0x01…0x14: 1..20 Hz
0x80: EtherCAT PreOp
0x81: EtherCAT SafeOp
0x82: EtherCAT Boot
0xFF: On/ available

Byte 2..4:

0x00: Off
0xFF: On

Examples:

0x 00 00 00 00: LED not present
0x FF 00 00 00 : LED is on, RGB =0, i.e. not illuminated, meaning: LED is present

LED indicators - meanings 3: — Examples LED status

Implementation in the ELM3xxxx

ELM3002-0205/0305/0405

Index	Name	Meaning
0xF915:01	RUN	RUN-LED
0xF915:02	LED Ch.1	LED channel 1 (AI)
0xF915:0E	LED Ch.2	LED channel 2 (AI)