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docs/en/msg_docs/RcParameterMap.md
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@@ -1,8 +1,36 @@
---
pageClass: is-wide-page
---
# RcParameterMap (UORB message)
**TOPICS:** rc_parametermap
## Fields
[source file](https://github.com/PX4/PX4-Autopilot/blob/main/msg/RcParameterMap.msg)
| Name | Type | Unit [Frame] | Range/Enum | Description |
| ----------- | ------------ | ------------ | ---------- | ------------------------------------------------------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| valid | `bool[3]` | | | true for RC-Param channels which are mapped to a param |
| param_index | `int32[3]` | | | corresponding param index, this field is ignored if set to -1, in this case param_id will be used |
| param_id | `char[51]` | | | MAP_NCHAN \* (ID_LEN + 1) chars, corresponding param id, null terminated |
| scale | `float32[3]` | | | scale to map the RC input [-1, 1] to a parameter value |
| value0 | `float32[3]` | | | initial value around which the parameter value is changed |
| value_min | `float32[3]` | | | minimal parameter value |
| value_max | `float32[3]` | | | minimal parameter value |
## Constants
| Name | Type | Value | Description |
| ----------------------------------------------------- | ------- | ----- | ------------------------------------------------------------------------------ |
| <a href="#RC_PARAM_MAP_NCHAN"></a> RC_PARAM_MAP_NCHAN | `uint8` | 3 | This limit is also hardcoded in the enum RC_CHANNELS_FUNCTION in rc_channels.h |
| <a href="#PARAM_ID_LEN"></a> PARAM_ID_LEN | `uint8` | 16 | corresponds to MAVLINK_MSG_PARAM_VALUE_FIELD_PARAM_ID_LEN |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/RcParameterMap.msg)
::: details Click here to see original file
```c
uint64 timestamp # time since system start (microseconds)
@@ -16,5 +44,6 @@ float32[3] scale # scale to map the RC input [-1, 1] to a parameter value
float32[3] value0 # initial value around which the parameter value is changed
float32[3] value_min # minimal parameter value
float32[3] value_max # minimal parameter value
```
:::