FMM640 LED status
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Main Page > EOL Products > FMM640 > FMM640 Manual > FMM640 LED status
This section is an explanation of LED indications on an FMB640 device.
| Behaviour | Meaning |
|---|---|
| Permanently switched on | GNSS signal is not received |
| Blinking every second | Normal mode, GNSS is working |
| Off | GNSS is turned off because: Device is not working or Device is in sleep mode |
| Blinking fast constantly | Device firmware is being flashed |
Status LED Indications
| Behaviour | Meaning |
|---|---|
| Blinking every second | Normal mode |
| Blinking every two seconds | Sleep mode |
| Blinking fast for a short time | Modem activity |
| Off | Device is not working or Device is in boot mode |
CAN Status LED indications
| Behaviour | Meaning |
|---|---|
| Blinking fast constantly | Reading CAN data from vehicle |
| Permanently switched on | CAN unit unresponsive |
| Off | Wrong program number or wrong wire connection or CAN processor is in sleep mode = CAN data not received |
