Safety Issue with Devo 7e, 8S and 10

I use a sticky throttle hold for that.

Virtual channel (Virt1 for me) = Complex Mix - 3 pages

1.Page 1:
Switch = None
Src = this virtual channel (Virt1 for me)
Curve = Min/Max
Scale = 100
Offset = 0
Mux = replace

2.Page 2:
Switch = None (FMOD0 for Heli)
Src = THR
Curve = 1-to-1
Scale = 100
Offset = -1
Mux = add

3.Page 3:
Switch = the switch who enable the throttle cut (RUD DR1 for me)
Src = none
Curve = Fixed
Scale = 100
Offset = 0
Mux = replace

Now you can use the virtual channel as safety switch for THR.

I don't use safety field for throttle channel, but aditional (last) page for throttle and pitch mixers with desired hold values and fixed curve.

Example config for Mini CP with sticky throttle hold and safety warning for FMODE and RUD DR switch (Devo8).

name=Mini CP
mixermode=Advanced
icon=MINICP.BMP
[radio]
protocol=DEVO
num_channels=8
fixed_id=
tx_power=10mW

[protocol_opts]
Telemetry=On

[channel1]
template=complex
[mixer]
src=ELE
dest=Ch1
switch=FMODE0
scalar=70
curvetype=expo
points=5,5
[mixer]
src=ELE
dest=Ch1
switch=FMODE1
scalar=85
curvetype=expo
points=10,10
[mixer]
src=ELE
dest=Ch1
switch=FMODE2
curvetype=expo
points=15,15

[channel2]
template=complex
[mixer]
src=AIL
dest=Ch2
switch=FMODE0
scalar=75
curvetype=expo
points=5,5
[mixer]
src=AIL
dest=Ch2
switch=FMODE1
scalar=85
curvetype=expo
points=10,10
[mixer]
src=AIL
dest=Ch2
switch=FMODE2
curvetype=expo
points=15,15

[channel3]
template=complex
[mixer]
src=THR
dest=Ch3
switch=FMODE0
usetrim=0
curvetype=3point
points=-100,20,100
[mixer]
src=THR
dest=Ch3
switch=FMODE1
usetrim=0
curvetype=3point
points=100,60,100
[mixer]
src=THR
dest=Ch3
switch=FMODE2
usetrim=0
curvetype=3point
points=100,60,100
[mixer]
src=THR
dest=Ch3
switch=Virt1
scalar=-100
usetrim=0
curvetype=fixed

[channel4]
template=simple
[mixer]
src=RUD
dest=Ch4

[channel6]
template=complex
[mixer]
src=THR
dest=Ch6
switch=FMODE0
scalar=60
usetrim=0
curvetype=3point
points=-17,35,90
[mixer]
src=THR
dest=Ch6
switch=FMODE1
scalar=60
usetrim=0
curvetype=3point
points=-100,0,100
[mixer]
src=THR
dest=Ch6
switch=FMODE2
scalar=60
usetrim=0
curvetype=3point
points=-100,0,100
[mixer]
src=ELE DR1
dest=Ch6
switch=Virt1
scalar=0
usetrim=0
curvetype=fixed

[channel7]
template=complex
[mixer]
src=Ch7
dest=Ch7
switch=MIX0
scalar=79
usetrim=0
curvetype=fixed
[mixer]
src=Ch7
dest=Ch7
switch=MIX1
scalar=70
usetrim=0
curvetype=fixed
[mixer]
src=Ch7
dest=Ch7
switch=MIX2
scalar=50
usetrim=0
curvetype=fixed

[virtchan1]
template=complex
[mixer]
src=Virt1
dest=Virt1
usetrim=0
curvetype=min/max
points=0
[mixer]
src=THR
dest=Virt1
switch=FMODE0
offset=-1
usetrim=0
muxtype=add
[mixer]
src=AIL
dest=Virt1
switch=RUD DR1
usetrim=0
curvetype=fixed

[trim1]
src=LEFT_V
pos=TRIMLV+
neg=TRIMLV-
[trim2]
src=RIGHT_V
pos=TRIMRV+
neg=TRIMRV-
[trim3]
src=LEFT_H
pos=TRIMLH+
neg=TRIMLH-
[trim4]
src=RIGHT_H
pos=TRIMRH+
neg=TRIMRH-
[timer1]
type=countdown
src=Ch3
time=270
[timer2]
src=Ch3
[timer3]
type=permanent
src=Ch3
val=5777277
[telemalarm1]
source=Volt2
above=1
value=33
[datalog]
switch=None
rate=1 sec
[safety]
Auto=min
RUD DR1=min
FMODE1=min
FMODE2=min
[gui-320x240]
V-trim=129,75,1
H-trim=4,220,3
V-trim=181,75,2
H-trim=191,220,4
Big-box=8,40,Timer1
Big-box=8,84,TelemV2
Big-box=8,128,TelemT1
Big-box=8,172,Timer3
Bargraph=200,150,Ch1
Bargraph=214,150,Ch2
Bargraph=228,150,Ch3
Bargraph=242,150,Ch4
Bargraph=256,150,Ch5
Bargraph=270,150,Ch6
Bargraph=284,150,Ch7
Bargraph=298,150,Ch8
Toggle=127,40,3,66,0,RUD DR
Toggle=162,40,1,64,128,FMODE
Toggle=144,77,5,68,0,ELE DR
Toggle=144,113,8,71,0,GEAR
Toggle=144,149,2,65,129,MIX
Toggle=144,185,4,67,0,AIL DR
Model=207,40
quickpage1=Telemetry monitor