I. Basic Information
Full Model：IC698CRE030-DE
Brand & Origin：GE Fanuc / Emerson, USA Original
Product Positioning
As a 300MHz redundant central processing unit (CPU) of GE PACSystems RX7i series, it serves as the core operation and control unit of RX7i industrial control systems, undertaking core tasks such as program execution, logical operation, data processing, equipment linkage and bus scheduling. Specially designed for medium and large-scale high-reliability and non-stop industrial control scenarios, it supports single-unit operation and dual-CPU hot redundant backup architecture. It is widely applied in non-stop production scenarios such as power energy, chemical industry, water treatment and metallurgical heavy industry, and acts as an essential original core spare part for upgrading old RX7i main control modules, renovating redundant control systems and expanding high-end industrial control platforms.
Hardware Architecture
It adopts an industrial-grade 300MHz high-speed embedded main control chip architecture, integrated with large-capacity high-speed SRAM, FLASH program storage unit, hardware floating-point operation unit, backplane bus scheduling controller and multi-protocol communication processing core. The whole machine adopts industrial-grade three-proof PCB and layered isolated wiring design, with independent shielding for separated strong and weak current areas to isolate electromagnetic interference and voltage crosstalk. Built with hardware watchdog, power monitoring, temperature monitoring and program fault-tolerant self-recovery mechanisms, it features fast program scanning speed, high floating-point operation accuracy, large bus throughput, strong redundancy synchronization and excellent long-term operation stability. Deeply optimized for heavy-load harsh working conditions such as high-frequency logical operation of industrial sites, large-scale I/O point scheduling, uninterrupted continuous operation and instantaneous redundant switching, it thoroughly solves common industrial pain points of old main controllers such as operation stuttering, insufficient floating-point accuracy, redundant synchronization deviation and system crash reset.
Mounting Specification
It supports embedded plug-in installation in the main control slot of GE RX7i series standard racks, occupying exclusive main control slots with standardized backplane bus docking and buckle locking fixation for vibration resistance, anti-loosening and stable contact. The panel is equipped with multi-function indicator lights for system operation, redundancy status, fault alarm and communication status, supporting rapid on-site inspection, redundancy status judgment and fault location troubleshooting. Featuring compact structure and high integration, it adapts to the dust-proof, moisture-proof and wide-temperature round-the-clock operating environment of closed industrial control cabinets. It supports live disassembly, assembly and maintenance without overall equipment power failure, fully complying with GE RX7i series original factory installation, commissioning and operation specifications.
Compatible Systems
Exclusively and perfectly compatible with GE PACSystems RX7i full-series racks, power modules, I/O modules, Genius bus modules and communication expansion modules. Natively adapted to GE Proficy Machine Edition (PME) configuration and programming software, it supports online program editing, uploading and downloading, online monitoring, forced debugging, fault diagnosis and system configuration. It natively supports mainstream industrial protocols such as SRTP, Modbus TCP/IP and Genius bus, enabling seamless connection with upper SCADA monitoring systems, touch screens, frequency converters, servo control systems and distributed remote I/O stations. It supports two system architectures: single-CPU independent control and dual-CPU hot redundant backup, adapting to various high-reliability industrial automation networking scenarios.
Product Characteristics
An original industrial-grade high-end RX7i main control CPU. It completes full-load program scanning aging, redundant synchronization accuracy test, high and low temperature condition verification, full EMC electromagnetic compatibility certification and bus pressure test before factory delivery. Equipped with a 300MHz high-frequency operation core, it supports high-speed logic and floating-point operation. It supports dual-unit hot redundant undisturbed switching with no program interruption, output jitter or equipment off-control during switching. With large-capacity program and data storage space, it supports the operation of complex process programs, multi-loop PID and large-scale interlock logic. It supports 24/7 uninterrupted high-load continuous operation. Old low-speed main control modules of the same series can be replaced in situ, adapting to scenarios such as industrial control system operation performance upgrading, redundant system construction and iterative renovation of old equipment.
II. Technical Specifications
1. Core Operation Parameters
Main Control Chip: Industrial-grade 300MHz high-speed embedded CPU core, integrated with independent hardware floating-point operation unit, supporting high-precision floating-point operation, complex formula operation, multi-loop PID operation and accurate process parameter setting. It features fast program scanning speed and nanosecond-level response of basic bit logic instructions. No scanning delay or operation stuttering occurs under large-scale program load, enabling efficient processing of high-density I/O points, complex interlock logic and dynamic process regulation operation tasks, fully meeting the high-speed and high-precision control requirements of medium and large-scale automatic systems.
2. Storage Resource Parameters
Equipped with original standard large-capacity storage configuration, including program FLASH storage, operating SRAM storage and power-off hold data storage area. Sufficient program storage space supports large-scale structured programs, multi-subprogram nesting, function block programming, process formula storage and historical parameter caching. The high-speed read-write operating memory ensures no data read-write delay or program operation stuttering. It has complete power-off data retention function, ensuring that key process parameters, equipment status and cumulative data will not be lost after power failure, and the operating state can be automatically restored after power-on, guaranteeing continuous and unbiased production processes and adapting to uninterrupted continuous production conditions.
3. Redundancy Synchronization Parameters
It supports standard RX7i dual-CPU hot redundant architecture, with real-time high-speed data synchronization, program synchronization, status synchronization and clock synchronization between master and backup CPUs. The redundant synchronization accuracy is extremely high with nearly zero data deviation between master and backup units, realizing instantaneous undisturbed system switching. No program interruption, data loss or output state change occurs during switching, ensuring no equipment jitter or process interruption. It supports two switching modes: automatic hardware-level redundant switching and manual software switching. It real-timely monitors the operating status and fault status of the master CPU, and the backup unit takes over control in milliseconds when the master unit is abnormal, thoroughly eliminating system shutdown and production interruption caused by single-point main control faults.
4. Communication & Bus Parameters
Natively integrated with a high-speed PCI backplane bus interface, it perfectly matches the timing of RX7i rack backplane bus, supporting high-speed parallel data interaction of multiple modules with large bus throughput and ultra-low transmission delay. The built-in standard industrial Ethernet interface supports SRTP real-time control protocol and Modbus TCP/IP protocol, enabling direct connection with upper monitoring systems and on-site intelligent equipment. It is compatible with Genius remote bus and serial communication expansion, capable of building large-scale distributed I/O control systems. The communication link is equipped with automatic fault tolerance, offline reconnection and data verification and error correction functions to ensure stable communication and accurate data in multi-equipment networking.
5. Environmental Operating Parameters
Operating Temperature：0℃～+60℃
Storage Temperature：-40℃～+85℃
Operating Humidity：5%~95% RH, non-condensing
The whole machine has passed authoritative industrial CE and FCC certifications. The board is coated with military-grade three-proof coating, featuring excellent dust-proof, moisture-proof, vibration-resistant, aging-resistant and electromagnetic interference-resistant performance. It withstands harsh industrial conditions such as long-term high-load operation, equipment vibration, dust accumulation, alternating temperature and humidity and high-frequency inverter interference, widely applicable to high-reliability continuous production scenarios such as electric power, chemical industry, water treatment and metallurgy.
III. Key Features
1. 300MHz High-Speed Operation for Efficient Control of Complex Processes
Equipped with a 300MHz high-frequency operation core and independent hardware floating-point unit, its operation performance is greatly improved compared with ordinary low-frequency main controllers. It easily undertakes high-load tasks such as large-scale structured programs, multi-loop PID precise regulation, complex equipment interlock logic and dynamic process parameter operation. Nanosecond-level instruction execution speed thoroughly solves industrial pain points such as program scanning delay, insufficient operation accuracy and system response lag under large-scale point networking and complex process control, ensuring accurate control, rapid response and efficient operation of the entire industrial control system, adapting to high-precision and high-complexity industrial production processes.
2. Dual Hot-Redundancy Undisturbed Switching to Eliminate Shutdown Risks
It supports standard RX7i dual-CPU hot redundant architecture. The master and backup controllers synchronize programs, data, clocks and output status in real time throughout the whole process with high synchronization accuracy and strong data consistency. When the master CPU fails with hardware faults, program exceptions, communication interruptions or power fluctuations, the backup CPU seamlessly takes over system control in milliseconds, with no program interruption, output fluctuation, equipment off-control or process parameter loss during the whole process. No shutdown restart or manual intervention is required, eliminating single-point main control fault risks from the source and perfectly adapting to critical continuous production processes that prohibit shutdown.
3. Large-Capacity Storage Configuration for Stable & Reliable Program Operation
Equipped with sufficient program storage and high-speed operating memory, it supports the storage of large-capacity process programs, multiple production formulas, complex function block logic and historical data caching, meeting the needs of long-term iteration, program expansion and functional upgrading of large-scale automatic systems. The high-speed read-write memory effectively avoids read-write delay, program stuttering and data disorder under big data interaction. Combined with the perfect power-off data retention mechanism, it can quickly restore the production state after power failure and restart without re-setting parameters, greatly improving process continuity and system fault tolerance.
4. Native Multi-Protocol Compatibility & Strong Networking Expandability
It natively supports mainstream industrial communication protocols such as SRTP, Modbus TCP/IP and Genius bus, enabling upper computer monitoring, remote I/O networking and on-site intelligent equipment docking without additional communication modules. The high-speed backplane bus ensures high-speed parallel data interaction of multiple modules in the rack without bus congestion or data packet loss. It supports multi-equipment linkage networking, distributed I/O expansion and iterative system functional upgrading, adapting to the construction of new complex industrial control systems and the expansion and renovation of old systems with flexible networking and strong scalability.
5. Non-Destructive In-Situ Replacement for Efficient Operation & Upgrading
The hardware dimensions, backplane interfaces, bus timing, configuration logic and communication protocols are fully compatible with GE RX7i series rack standards. Old main control modules of the same series with low speed, frequent faults and insufficient operation performance can be directly replaced in situ. No rack structure modification, rewiring or program configuration reconstruction is required. Full-load operation can be realized after program synchronization upon power-on, greatly shortening the downtime for system upgrading and equipment technical renovation, reducing operation and maintenance costs, and rapidly improving the operation performance and stability of the entire industrial control system.
IV. Working Principle
GE IC698CRE030-DE is a 300MHz high-performance redundant main control CPU module for PACSystems RX7i series. As the core brain of the entire industrial control system, after being inserted into the main control slot of a standard RX7i rack and completing backplane docking, program downloading and configuration setting, it automatically finishes hardware self-test, bus initialization, storage unit verification, redundant synchronization matching and system initialization upon power-on, and enters the normal program scanning operating state.
During normal system operation, the CPU cyclically executes user programs according to a fixed scanning cycle, completing core tasks such as logical operation, timing judgment, interlock verification, PID parameter operation and process regulation. It real-timely collects point status data of local rack I/O modules and remote Genius I/O stations through the high-speed backplane bus, accurately outputs control instructions after program logical operation and data processing to drive the action of execution equipment, and realizes closed-loop control of automatic production processes. Meanwhile, it conducts real-time data interaction with upper SCADA, touch screens and external intelligent equipment through native communication protocols, uploading equipment status, process parameters and fault information and receiving remote control instructions.
In the redundant architecture mode, the dual master and backup CPUs synchronize program codes, operating data, clock timing, I/O status and output register data in real time throughout the whole process to maintain completely consistent status of the two units. By default, the master CPU undertakes all control tasks, and the backup CPU synchronizes in real time and stands by in hot state. When the master CPU fails with hardware faults, program exceptions or communication interruptions, the system instantly triggers the redundant switching mechanism, and the backup CPU seamlessly takes over all control tasks to ensure uninterrupted system operation. The built-in hardware watchdog, fault self-test and data fault tolerance mechanism real-timely monitors hardware status and program operation conditions, automatically alarms and latches fault codes upon abnormalities. It continuously provides high-speed, accurate and stable core operation and control support for the entire automatic system, ensuring 24/7 uninterrupted continuous production and operation of equipment.
V. Application Scenarios
1. Critical Process Redundant Control Systems: Applied in non-stop scenarios such as power generation, chemical continuous processes, water treatment main control systems and metallurgical key production lines, it builds a dual-CPU hot redundant architecture to thoroughly eliminate production shutdown, process interruption and equipment faults caused by main control failures.
2. Medium & Large-Scale Complex Automatic Control Systems: Serving as the core main control of RX7i systems, it undertakes tasks such as large-scale I/O point control, complex interlock logic, multi-loop PID regulation and multi-equipment coordinated control, adapting to fully automatic control systems of intelligent manufacturing, heavy industry equipment and assembly lines.
3. Distributed Remote Networking Control Systems: Matched with Genius remote bus modules, it realizes cross-workshop and long-distance distributed I/O acquisition and equipment control in factory areas, adapting to decentralized automatic networking and remote equipment linkage control scenarios of large factories.
4. Performance Upgrading & Technical Renovation of Old Industrial Control Systems: Used to replace old low-frequency, low-performance and high-fault CPU modules of RX7i series to improve system operation speed, control accuracy, operation stability and fault tolerance. It serves as the core original spare part for performance upgrading and redundant renovation of GE RX7i industrial control systems.
