Axis 240 User Manual page 55

BOOT B I1 I2 I3
I3 I4
/ \ 0 1
BOOT Activate at startup.
\B Activate after high-low logical transition of Control button.
/B Activate after low-high logical transition of Control button.
1B Activate when Control button is logically high (pressed).
0B Activate when Control button is logically low (released).
\I1 Activate after high-low logical transition on Input port 1.
/I2 Activate after low-high logical transition on Input port 2.
1I3 Activate when Input port 3 is logically high.
0I4 Activate when Input port 4 is logically low.
... etc.
\B&1I1
I4 B I1 I2
&