User Manual

Textile L100 Reader User's Guide
28/48 Revision 3.5 December 2007
8.2.2 Input Configurations
When an I/O port is configured as an input, the external logic signal must be connected directly to
the input (0V-24V) of the requested I/O port. If the output of the external logic signal is an open-
collector output, the V
IN
signal must be connected to a supply (V
OUT
or external supply) or to the
ground to pull up/down the I/O port. In this case, all the grounds must be connected together
(external logic, external supply and TR-L100 Reader ground supply). The following examples show
how to connect a signal (from a sensor, a push-button, etc…) to the TR-L100 Reader.
Figure 10: Connecting a “Totem-Pole” Sensor
TR-L100 Reader
Ground
V
OUT
V
IN
I/O O
Figure 11: Connecting an “Open-Collector” Sensor (N Type)
TR-L100 Reader
Ground
V
OUT
V
IN
I/O O
Figure 12: Connecting an “Open-Collector” Sensor (P Type)
TR-L100 Reader
Ground
V
OUT
V
IN
I/O O