User's Manual

I/O Ports
9.2.2 Output Configuration
Figure 11: I/O Configured as Output
9.2.3 VOUT Characteristics
Figure 12: VOUT Characteristics
V
OUT
:
• Output DC 28V.
• Output current max: 100 mA
9.3 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 L-L100 Reader ground supply). The following examples show
how to connect a signal (from a sensor, a push-button, etc…) to the L-L100 Reader.
April 2003 Revision 3.1b 31/45