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 |
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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 |
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Green LED permanently on |
The M/L is ready to receive a file |
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Green LED flickering unevenly |
The M/L is receiving a file |
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Green LED blinking at slow speed |
XModem file upload completed successfully |
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"One long + one short" red LED pattern |
Communications error during the XModem file upload |
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"One long + two short" red LED pattern |
The file is too large |
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"One long + three short" red LED pattern |
Flash memory failure |
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"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 |
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Green and red LEDs slowly blink three times |
The Bus Probe firmware has successfully started |
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Green LED blinks once |
Bus Probe sensor has received a Modbus request with the correct checksum |
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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 |
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Red LED permanently on |
The Bus Probe is preparing to update the M/L. Do not turn off the power. |
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Green LED flickering unevenly, red LED permanently on |
The Bus Probe is updating the M/L. Do not turn off the power. |
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"Two short" green LED pattern |
The M/L has been updated. You can now safely turn off or power-cycle the Bus Probe. |