GE PACSystems RX7i Reference Manual page 65

Chapter 2. CPU Features & Specifications
Redundant IP Addresses
Effective with firmware version 9.30, the CPE400 supports two independent Redundant IP addresses,
one for LAN1 and one for LAN2. LAN2 Redundant IP is supported when configured for Ethernet mode
only.
Redundant IP is supported by the SRTP Server, Modbus TCP Server, and EGD protocols. It is not possible
to use Redundant IP with the OPC UA Server or with the Ethernet firmware update web page.
For further details, refer to the PACSystems Hot Standby CPU Redundancy User Manual, GFK-2308 (rev
L or later).
Error Checking and Correction
RX3i Redundancy CPUs provide error checking and correction (ECC), which results in slightly slower
system performance, primarily during power-up, because it uses an extra 8 bits that must be initialized.
For details on ECC, refer to the PACSystems Hot Standby CPU Redundancy User Manual, GFK-2308.
Note: Multiple Recoverable Memory Error faults may be generated when a single-bit ECC error is
detected. When a single-bit ECC error is detected, the value presented to the
microprocessor is corrected. However, the value stored in RAM is not corrected until the next
time the microprocessor writes to that RAM location.
Serial Port CPE400
Effective with firmware version 9.40, the CPE400 Serial Port (COM1) is supported. Note that it only
supports the Serial IO protocol at this time.
CPE400 is equipped with an RJ45 serial port. It is marked COM and is located on the underside of the
equipment (Figure 3). Its default settings are RS-232C, 115kBaud, 8 data bits, no parity and 1 stop bit. For
pinout, refer to Section 5.2.3.3. For more general information on serial port usage, refer to Chapter 5.
Note that CPE400 does not support PME connection via the serial port; use an Ethernet port,
54 PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual GFK-2222AD