User's Manual

Library L100 Reader User's Guide
9 I/O Ports
The L-L100 Reader features four I/O ports. All four I/O ports can be configured independently as a
general purpose input or output.
Depending on the Application software downloaded in the DPU, the I/O port may command a
relay, trigger specific commands (Windowing…) or read input signals.
The I/O Port is controlled by the DPU with commands using STX protocol. This means that
I/Os are not controlled by the RPU which uses DLLs.
9.1 General Purpose I/Os
Each I/O can be configured independently as an input or output.
When an I/O is configured as input, it can be used to connect sensors or industrial logic commands
to execute a specific task. For instance, the L-L100 Reader can execute a smart label Read
command according to the logical level of the input command.
When the I/O is configured as output, it can command a relay or any other transducer.
• Input: Industrial logic (0V to 28V) TTL-compatible.
• Output: Open drain, 250 mA (maximum).
9.2 Internal Connections
This paragraph describes I/O electronic schematics when the configuration is set to input or output.
It also gives the characteristics of the V
OUT
supply which is available on the I/O port.
9.2.1 Input Configuration
Figure 10: I/O Configured as Input
30/45 Revision 3.1b April 2003