40
IF1C
Fixed RFID Reader User Guide
Port Pin Assignments
Use this section to understand the port pin assignments for the ports located on
the reader.
GPIO Port
The GPIO port allows GPIO communications with your reader.
Pin
Function
Description
1
+5Vdc +/-10%
Non-isolated wetting supply, 300mA max
2
H O S T _ R X
3
H O S T _ T X
4
NC
5
GND
Non-isolated signal ground
6
NC
7
NC
8
NC
9
ISO_V-
Isolated common return for GPIO input and outputs
10
ISO_V-
Isolated common return for GPIO input and outputs
11
GP output 0+
Isolated GP output (open collector,
5
- 28V max, 5mA maximum
continuous)
12
GP output 1+
Isolated GP output (open collector,
5-28V max, 5mA maximum
continuous
)
13
GP input 0+
Isolated GP input
V
in low
= -1V to 0.8V max; V
in high
= 4.5V to
28V max
14
GP input 1+
Isolated GP input
V
in low
= -1V to 0.8V max; V
in high
= 4.5V
to 28V max
15
ISO_V+
Isolated external power for GP out pullups
(28Vdc max)
1
11
10
5
15
6
RS232 Receive
RS232 Transmit
