Status LEDs

Bus Probes feature two status LEDs — greed and red. The LED patterns of Bus Probes conform to Tibbo's standard LED patterns used on our programmable devices.

Here is the list of LED patterns supported by BP sensors:

During the device boot, after the Monitor/Loader (M/L) verifies the integrity of the application firmware:

Pattern	Description	Meaning
	Green and red LEDs blinking in turns at high speed	Application firmware is not loaded or corrupted

When the M/L is in the firmware update mode:

Pattern	Description	Meaning
	Green LED permanently on	The M/L is ready to receive a file
	Green LED flickering unevenly	The M/L is receiving a file
	Green LED blinking at slow speed	XModem file upload completed successfully
	"One long + one short" red LED pattern	Communications error during the XModem file upload
	"One long + two short" red LED pattern	The file is too large
	"One long + three short" red LED pattern	Flash memory failure
	"One long + four short" red LED pattern	The file is invalid (that is, contains invalid data)

When the application firmware is executing:

Pattern	Description	Meaning
	Green and red LEDs slowly blink three times	The Bus Probe firmware has successfully started
	Green LED blinks once	Bus Probe sensor has received a Modbus request with the correct checksum
	Red LED blinks once	Bus Probe sensor has received a Modbus request with an incorrect checksum

Note: When the application firmware is executing, the green LED will turn on anytime the MD button is pressed.

When the M/L updater firmware is executing:

Pattern	Description	Meaning
	Red LED permanently on	The Bus Probe is preparing to update the M/L. Do not turn off the power.
	Green LED flickering unevenly, red LED permanently on	The Bus Probe is updating the M/L. Do not turn off the power.
	"Two short" green LED pattern	The M/L has been updated. You can now safely turn off or power-cycle the Bus Probe.