The IC695CPU320 is a PACSystems RX3i CPU that is manufactured by GE Fanuc Emerson. This device can be used to communicate with the programmer and HMI devices via a serial port using SNP Slave Protocol. The CPU contains 64 Megabytes of battery-backed user memory and 64 Megabytes of non-volatile flash user memory. Features for the IC695CPU320 include the ability to provide access to bulk memory via reference table %W, configurable data and program memory, and support of programming languages like Ladder Diagram, Structured Text, Function Block Diagram, and C. This IC695CPU320 module supports most Series 90-30 modules and expansion racks and also supports up to 512 program blocks (with a maximum block size of 128 Kilobytes). CPU firmware is able to be upgraded and the hardware has two serial ports, the RS-485 and RS-232.

Specifications for the IC695CPU320 include power requirements of 1.0 Amperes nominal for +3.3 Volts DC and 1.2 Amperes nominal for +5 Volts DC. It has an operating temperature range between 0 and 60 degrees Celsius and supports floating point. The IC695CPU320 has a time of day clock accuracy with a maximum drift of 2 seconds per day and an elapsed time clock (internal timing) accuracy of 0.01% maximum. Embedded communications for this hardware include RS-232 and RS-485 ports; serial protocols supported are Modbus RTU Slave, SNP, and Serial I/O. For PCI compatibility, the IC695CPU320 system is designed to be electrically compliant with the PCI 2.2 standard. It supports up to 512 program blocks, with each block having a maximum size of 128 Kilobytes. For additional information on CPU performance, refer to documentation provided by manufacturer. Battery memory retention information is available in the PACSystems RX3i and RX7i Battery Manual (GFK-2741).

Part number IC693CPU320 supports both RS-232 and RS-485 communication standards. This device is a part of the PacSystems RX3i family line of products. It is optimized to be used to efficiently control heavy industrial machines and processes. Using the peripheral component interconnect (PCI) slot, this module is capable of ensuring data transfer at high speeds. Using the serial backplane, migration can be done for the Series 90-30 I/O systems. The GE Fanuc IC693CPU320 is able to be used with programming workstations, human-machine interface (HMI), supervisory control and data acquisition (SCADA) systems. A Celeron M processor is installed within the internals of this GE Fanuc product. The processing speed on this module is one (1) gigahertz. The rated user memory of this module is sixty-five (65) megabytes (MB). In the event of a blackout, the memory of this device remains intact due to the battery module within the device. This battery module is a lithium smart battery series 90-30 auxiliary battery module. The non-volatile flash user memory on this automation module is sixty-four (64) megabytes (MB).

The IC693CPU320 processor module can communicate with both an HMI and a programmer. It does so by utilizing the serial port with SNP Slave protocol. Using the dual backplane bus, this module is able to communicate with the smart modules and other connected I/O devices. It comes with support for both RX3i backplane BUS, and a serial backplane BUS. For displaying the status updates, this module comes with six( 6) separate LEDs located on its front panel. 

The IC693CPU320 is optimized to be used to efficiently control the heavy industrial machines and processes. Using the Peripheral Component Interconnect (PCI) slot, this module can ensure data transfer at a high speed. Using the Serial backplane, migration can be done for the Series 90-30 I/O systems. The GE Fanuc / Emerson Automation IC693CPU320 can be used with programming workstations, Human Machine Interface (HMI), Supervisory Control and Data Acquisition (SCADA) systems. The CPU comes equipped with an internal Celeron M processor that gives the unit a processor speed of 1 GHz. This CPU can be used in any slot in the universal backplane except for the last slot, which is reserved for the serial bus transmitter. The CPU is intended for use with the RX3i system. When installing the IC693CPU320, use a type 1 or IP20 type enclosure to protect against the live electrical elements of the unit. The CPU should also be installed in a location that is away from other units that generate significant amounts of heat and electrical noise. As an RX3i CPU, the unit features hot standby (HSB) CPU redundancy. This allows for critical applications or processes to continue operating if a failure occurs in any single component. A redundancy system is made up of an active unit that controls the process and a backup unit that is synchronized with the active unit and can continue the process if necessary. The IC693CPU320 features eight LED indicator lights to show the operating status of the unit and its components.