PACSystemsâ„¢ RX3i and RSTi-EP CPU Reference Manual Section 5
GFK-2222AK October 2019
Communications 124
5.1.1.3 10Base-T/100Base-Tx Port Pin Assignments
Pin assignments are the same for the RX3i and embedded Ethernet ports.
5.1.1.4 Recovering a Lost IP Address
See Establishing Initial Ethernet Communications, Section 3.4.1.
5.1.2 Ethernet Interface Modules
In addition to Ethernet interfaces embedded in certain CPUs (see RX3i CPU Features and
Specifications) and RX3i systems support rack-based Ethernet Interface modules. These
modules are not interchangeable.
For details about the capabilities, installation, and operation of these modules, refer to
PACSystems RX3i TCP/IP Ethernet Communications User Manual GFK-2224 and
PACSystems TCP/IP Ethernet Communications Station Manager User Manual, GFK-2225.
5.2 Serial Communications
RX3i CPUs, except CPE330, support one or more serial ports. The RSTi-EP CPE100/CPE115
serial port is disabled at the time of publication.
The independent on-board serial ports of the CPU are accessed via external connectors on
the module. COM1 and COM2 provide serial interfaces to external devices. COM1 is also
used for firmware upgrades.