Using The Input Interfaces; If5 Powered Input - Intermec IF5 User Manual

Using the Input Interfaces

IF5 Powered Input

IF5 Fixed Reader User's Manual
Each of the four inputs is compatible with input signals of 10 to
48 VDC. Both the high and low signal contacts are exposed and
isolated to 1500V. Input impedance is 1.8K minimum.
GPIO Input Signal Descriptions
Signal Description
V (High) High input voltage 10V
in
V (Low) Low input voltage
in
In a typical application, the IF5 senses input from an external
control like a switch and then starts a tag read operation.
There are three basic ways to connect input controls to the IF5
input interfaces:
• Supply the input interface with power from the IF5.
• Isolate the IF5 from the input power source.
• Use an open collector solid state drive from a remote device to
control the inputs.
For more information, see the next examples.
This is the simplest way to connect a control to an IF5 input
interface. If the external control device is a switch, you can
connect one side of the switch to an IF5 +Input pin, and the
other side of the switch to one of the +12 VDC sources. Ground
the corresponding -Input pin as shown in the next illustration.
+12V
+Input
External
input
switch
- Input
Ground
IF5 Powered Input
Chapter 5 — Using the IF5 GPIO Interfaces
Min.
-1V
Typical Max.
24V 48V
0V 1V
127