Chapter 2. CPU Features & Specifications
GFK-2222AD
April 2018
71
Serial Ports
These ports provide serial interfaces to external devices and can be used for firmware upgrades. For
serial port pin assignments, electrical isolation, and details on serial communications, refer to Chapter 5.
CPE302/CPE305:
one RS-232 port (using RJ-25 connector).
CPE310:
one RS-232 port (COM1) and one RS-485 port (COM2).
The RS-232 port does not supply the 5Vdc power offered by other RX3i and Series 90-30 CPUs.
Use cable IC693CBL316 to connect to the serial RJ-25 port on the CPE302/CPE305. This 3m shielded
cable provides a 9-pin D-connector on the other end.
Ethernet Port
The embedded Ethernet interface connects via one RJ45 Ethernet port that automatically senses the
data rate (10 Mbps or 100 Mbps), communication mode (half-duplex or full-duplex), and cabling
arrangement (straight-through or crossover) of the attached link.
The embedded Ethernet interface supports communications with the Proficy Machine Edition (PME)
programming and configuration software using the proprietary SRTP protocol. The CPE302/CPE305
/CPE310 CPUs provide two SRTP-server connections.
Refer to
Establishing Initial Ethernet Communications, Section 3.4.1.