Omron NS12 Quick Start Manual page 23

OMRON
6. The [Serial PortA] tab has the serial port A settings. When PLC is
choosen as serial port A communication, then the protocol can be
"NT Link(1:N)" or "NT Link(1:1)". Communication speed can be
"Standard" or "High Speed". When using protocol "NT Link(1:N)"
the NT Link unit number must be set different for each PT (unit
number range is 0-7).
7. The [Serial PortB] tab has the serial port B settings. When you
choose the "Bar-Code Reader" as serial port A communication in
the [Comm-All] tab, the protocol can be set to match
communication setting of the connected bar-code reader.
8. When Ethernet is enabled in the [Comm-All] tab, the settings can
be configured. There are normal network, node and UDP Port
number settings, IP address settings but also conversion table. In
the conversion table the user must write all IP addresses of the
stations that wanted to communicate with the PT. When adding
some addresses in the conversion table, only the node number
NS Series Quick Start Manual
Page 23