Installation and Startup
Rev 2 Mar.18
27
41110485
Digital Input
Digital input is available on I/O1, I/O2, and I/O3 on the power connector.
Note: To use I/O3 as a digital Input, GPIO56 (that drives I/O3 when used as a digital
output) must be low.
You can connect any of these pins to a digital input to detect the state of a digital
sensor or pulse counter.
Figure 2-19: Digital Input
Note: When using a digital input, the pull-up should be Off.
Gateway
Off
V
in
or 3.3 V*
Internal Pull-up
10 k
Resistor
FX30
Digital input
Internal pull-up
NſUHVLVWRU
Off
V
High
!
3.0 V
I/O 1, I/O 2, I/O 3
RQWKHSRZHUFRQQHFWRU
3URWHFWLRQ
FLUFXLWU\
V
in
RU
V
Table 2-2: Digital Input
Pull-up
State
Minimum
Typical
Maximum
Units
Off
Low
—
—
1.0
V
High
3.0
—
Vin
V