Table of Contents
Advertisement
Digital I/O digital output with pull-up enabled:
•
When the port is configured for pull-up, switch 2 is closed, activating the
•
+5.0 VDC pull-up resistor.
•
When switch 1 closes, the port is on and the front panel LED (IPL EXP RIO8
only) is on.
When switch 1 opens, the port is off, and the front panel LED (IPL EXP RIO8
•
only) is off.
•
Example application, digital output with pull-up: controlling another device
via its contact closure input port
Connect the digital I/O port to the contact input port of another device, such
as an Extron DTP transmitter. When activated, the digital I/O digital output port
momentarily shorts pin 1 to ground (pulsed contact for 0.5 seconds), closes
switch 1, which selects the input on the connected device.
+5.0 V
1k ohms
SW 2
CTL
SW 1
Figure 15.
Digital I/O Digital Output Application With Pull-up:
Contact Closure Input Selection on a Connected Device
IPL EXP I/O Series • Hardware Features and Installation
Digital
I/O
Voltage
Protection
GND
DTP T UWP 232 D
R
26
Advertisement
Table of Contents
