2.1.5.
Digital Input & LED indicators
The LED status and the digital input relation are listed as follows:
Isolated:
TTL:
Input status
Digital Input( Logic level )
Electric signal
LED
OPEN
1
Low
OFF
0 ~ +0.8V
0
Low
ON
+2 ~+ 5V
1
High
OFF
Input status
Digital Input( Logic level )
Electric signal
LED
OPEN
1
Low
OFF
0 ~ +1V
1
Low
OFF
+4 ~ +30V
0
High
ON
IN7
IN0
i-9048
power LED