Protocol Number: 28
Autobind: No
Channel Re-mapping: Yes
Extended Limits: Yes
Failsafe Support: Yes
Receiver Match: Yes
Telemetry: Yes
Option Value: Servo refresh rate. A value of 0 gives 50Hz (min), 70 gives 400Hz (max). Specific refresh rate value can be calculated as
option=(refreshrate−50)÷5
​
Notes
Models: FS-iA6B, FS-iA10B, etc.
FlySky AFHDS 2A is labelled FlSky 2A in OpenTX.
You must use a different Receiver Number for each different AFHDS 2A receiver you bind. Re-using numbers will remove the binding for the previous receiver.
A maximum of 64AFHDS 2A receivers can be bound to the MULTI-Module.
Telemetry
If telemetry data is incomplete (for example, missing receiver RSSI) you need to upgrade your RX firmware to version 1.6 or later. You can do it from an original FlySky radio, or using an ST-Link programmer, as explained in this tutorial.
Suggested OpenTX RSSI alarm threshold settings:
OpenTX Version
Low Threshold
Critical Threshold
Prior to 2.3.0
15
12
2.3.0 and later
70
50
Channel Assignment
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
A
E
T
R
CH5
CH6
CH7
CH8
CH9
CH10
CH11
CH12
CH13
CH14
Sub Protocols
0 - PWM_IBUS
1 - PPM_IBUS
2 - PWM_SBUS
3 - PPM_SBUS
4 - PWM_IBUS16
3 additional channels. Need recent or updated RXs.
CH15
CH16
CH17
CH15
CH16
LQI
LQI: Link Quality Indicator
5 - PPM_IBUS16
3 additional channels. Need recent or updated RXs.