> For the complete documentation index, see [llms.txt](https://www.multi-module.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.multi-module.org/using-the-module/protocol-details/m-link.md).

# M-LINK

## Details

**Protocol Number:**  78\
**Autobind:**  No\
**Channel Re-mapping:**  No\
**Extended Limits:**  Yes\
**Failsafe Support:**  Yes\
**Receiver Match:**  Yes\
**Telemetry:**  Yes\
**Option Value:**  N/A\
**Firmware Version:** v1.3.2.30

## Notes

{% hint style="warning" %}
Failsafe **MUST** be configured once with the desired channel values (hold or no pulses are not supported) while the RX is up (wait 10+ sec for the RX to learn the config) and then failsafe **MUST** be set to RX/Receiver otherwise the servos will jitter.
{% endhint %}

Telemetry: the 2 RXs I have are sending different information in different format

* RX-5: RX\_RSSI=RSSI=sort of RSSI or link quality, RX\_LQI=number of connection lost, TX\_RSSI=RSSI from the TX perspective, TX\_LQI=percentage of received telemetry packets
* RX-9-DR: A1=RX Batt (Ratio=12.7), **RX\_RSSI=TX\_LQI**=percentage of received telemetry packets **from the TX** perspective **not RX**, TX\_RSSI=RSSI from the TX perspective, TX\_LQI=percentage of received telemetry packets

## Channel Assignment

| CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 | CH9 | CH10 | CH11 | CH12 | CH13 | CH14 | CH15 | CH16 |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | ---- | ---- | ---- | ---- | ---- | ---- | ---- |
| CH1 | CH2 | CH3 | CH4 | CH5 | CH6 | CH7 | CH8 | CH9 | CH10 | CH11 | CH12 | CH13 | CH14 | CH15 | CH16 |