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- IC697CPM790
- Central Processing Unit
- USA
- 180 x 50 x 105 mm
- 0.78 kg
- Xiamen, China
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Product Overview
The GE IC697CPM790 Central Processing Unit is a CPU module designed for use in compatible GE Fanuc Series 90-70 programmable logic controller systems. As the central processing component of a PLC architecture, the CPU is responsible for executing the user application program, processing control logic, managing system operations, and coordinating data exchanged with connected I/O and communication modules.
In an industrial automation system, the CPU serves as the primary decision-making component. Signals received through input modules can be processed according to the application program, while output commands can be generated for connected field devices. At the same time, the controller can coordinate information exchanged with communication and network modules.
The IC697CPM790 is therefore fundamentally different from a digital input module, output module, or communication interface. Its main role is central PLC processing and control.
The specified dimensions of the IC697CPM790 are approximately 180 × 50 × 105 mm, with a specified weight of approximately 0.78 kg.
A CPU module such as the IC697CPM790 is typically integrated into a larger Series 90-70 control architecture containing a compatible rack, power supply, I/O modules, communication modules, field devices, and programming software.
For legacy automation installations, selecting the correct CPU is particularly important because the CPU affects application compatibility, memory requirements, communication architecture, I/O configuration, and overall controller performance.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | GE Fanuc / GE |
| Product Family | Series 90-70 |
| Model | IC697CPM790 |
| Product Type | Central Processing Unit |
| CPU Type | PLC Central Processing Unit |
| Primary Function | PLC program execution and control processing |
| System Architecture | Modular PLC |
| Compatible Platform | GE Fanuc Series 90-70 |
| Installation | Series 90-70 PLC Rack |
| Main Role | Central Controller |
| Control Function | Application logic execution |
| I/O Management | Coordinates connected I/O |
| Communication Management | Supports system communication functions |
| Programming | PLC Application Programming |
| Application | Industrial Automation and Control |
| Dimensions | 180 × 50 × 105 mm |
| Weight | 0.78 kg |
| System Integration | Series 90-70 PLC Architecture |
| Typical Environment | Industrial Control Cabinet |
| Maintenance | Modular CPU Replacement |
| Typical Use | Machine and Process Control |
Function and Working Principle
The main function of the IC697CPM790 is to execute the PLC application program and coordinate control operations within the Series 90-70 architecture.
A simplified control process can be represented as:
Input Signals → I/O Modules → CPU Processing → Output Commands → Field Equipment
The CPU continuously processes information according to the configured control program.
A typical control cycle can involve several important operations:
- Reading input information
- Processing the application logic
- Performing calculations
- Evaluating control conditions
- Updating internal data
- Managing communication functions
- Updating output information
- Performing system diagnostics
For example, a sensor connected to an input module may detect the presence of a product on a conveyor. The CPU processes the input condition through the programmed control logic and determines whether a corresponding output should be activated.
The CPU therefore provides the central processing function that turns field information into control decisions.
Role in Industrial Control Systems
The IC697CPM790 serves as the central processing element of a compatible Series 90-70 PLC system.
A simplified architecture can be represented as:
Sensors / Field Devices → I/O Modules → IC697CPM790 → Output Modules → Actuators
Communication modules can also be connected to the controller:
IC697CPM790 ↔ Communication Modules ↔ Industrial Network
The CPU coordinates these different system components.
Its responsibilities can include:
- Executing control logic
- Processing input data
- Generating output commands
- Managing internal registers and variables
- Coordinating I/O operations
- Supporting communication functions
- Performing controller diagnostics
- Managing the PLC application
This central role makes CPU selection one of the most important considerations when maintaining or rebuilding a legacy PLC system.
Industrial Applications
Manufacturing Automation
The IC697CPM790 can be used as the central controller in suitable manufacturing automation systems.
Potential applications include:
- Assembly lines
- Packaging equipment
- Conveyor systems
- Production machinery
- Material-handling systems
- Automated inspection equipment
The CPU executes the control logic required to coordinate sensors, actuators, motors, valves, and other connected devices.
Machine Control
Industrial machines often require deterministic execution of programmed sequences.
The CPU can coordinate machine operations such as:
- Start and stop sequences
- Interlocking
- Timing operations
- Position-related logic
- Alarm handling
- Equipment sequencing
The actual functionality depends on the application program and connected hardware.
Process Control
The CPU can also be part of process-control installations where inputs from field instruments are processed and corresponding control actions are generated.
Potential process applications include:
- Pump control
- Valve control
- Material processing
- Utility systems
- Industrial production processes
Material Handling
Conveyors, transfer systems, sorting equipment, and automated handling machines often require centralized PLC control.
A Series 90-70 CPU can coordinate multiple I/O points and execute the sequencing logic required for these systems.
OEM Equipment
OEM machinery based on Series 90-70 PLC technology may use a central processing module to control the complete machine.
The CPU can coordinate local I/O, communication interfaces, operator interfaces, and machine sequences.
Installation and System Integration
Proper installation is important because the CPU is the central component of the PLC architecture.
Before installing the IC697CPM790, engineers should verify:
- Exact CPU model
- Series 90-70 rack compatibility
- Power supply compatibility
- I/O configuration
- Memory requirements
- Application program compatibility
- Communication architecture
- Programming software requirements
- Firmware considerations
- Module configuration
- Cabinet environment
- Grounding requirements
Typical Installation Procedure
- Back up the existing PLC application program.
- Record the current hardware configuration.
- De-energize the PLC system.
- Verify the IC697CPM790 model.
- Confirm rack compatibility.
- Inspect the CPU for physical damage.
- Install the CPU in the appropriate rack position.
- Confirm that the module is properly seated.
- Verify power supply connections.
- Re-energize the PLC system.
- Check CPU status indicators.
- Load or verify the appropriate PLC application.
- Verify hardware configuration.
- Check connected I/O modules.
- Check communication modules.
- Verify PLC operating status.
- Test input processing.
- Test output operation.
- Check diagnostics.
- Complete system commissioning.
Because the CPU controls the application, engineers should avoid making uncontrolled configuration changes during replacement.
A complete backup of the existing PLC program and hardware configuration is strongly recommended before maintenance.
PLC CPU Configuration
The IC697CPM790 should be evaluated as part of the complete PLC configuration rather than as an isolated component.
A typical architecture may contain:
Power Supply → CPU → I/O Modules → Communication Modules → Field Devices
The CPU communicates with the system’s other components through the PLC backplane and configured interfaces.
When replacing a CPU in an existing installation, several areas should be checked.
Application Program
The existing PLC program should be backed up and verified before replacement.
Hardware Configuration
The CPU must be compatible with the existing rack and installed modules.
I/O Configuration
Connected digital and analog I/O modules should be checked against the controller configuration.
Communication Configuration
If the PLC uses Ethernet, serial, bus, or other communication modules, their configuration should also be reviewed.
Program Compatibility
The replacement CPU must be capable of supporting the existing application requirements.
System Testing
After installation, the system should be tested in a controlled manner before returning the machine to normal production.
CPU Troubleshooting
Because the CPU is central to PLC operation, troubleshooting should follow a systematic process.
Check Power
Verify that the PLC rack and power supply are operating correctly.
Check CPU Installation
Confirm that the CPU is securely installed and correctly seated.
Check Status Indicators
Review available CPU status information and diagnostic indicators.
Check Application Program
A corrupted, incomplete, or incompatible application configuration can prevent normal operation.
Check I/O Modules
A problem with an I/O module or backplane connection can affect system behavior even when the CPU itself is functioning correctly.
Check Communication Modules
If communication faults are present, inspect the associated communication modules, cables, network equipment, and configuration.
Check Hardware Configuration
Verify that the actual rack configuration matches the configured PLC hardware.
Check Operating Conditions
Industrial electrical noise, temperature, grounding, and power-quality issues can affect controller reliability.
Check Diagnostics
Available PLC diagnostics should be reviewed before replacing the CPU.
A structured troubleshooting process helps distinguish between CPU faults and problems originating elsewhere in the control system.
Compatible System Components
The IC697CPM790 can form part of a larger GE Fanuc Series 90-70 PLC architecture.
| Component | Function |
|---|---|
| Series 90-70 Rack | Provides module mounting and backplane connection |
| Series 90-70 Power Supply | Provides system operating power |
| IC697CPM790 | Central PLC processing |
| Digital Input Module | Receives discrete field signals |
| Digital Output Module | Controls discrete field devices |
| Analog Input Module | Measures analog process signals |
| Analog Output Module | Provides analog control signals |
| Ethernet Interface Module | Provides Ethernet connectivity |
| Ethernet Controller Module | Provides network communication |
| Serial Communication Module | Provides serial communication |
| Communication Coprocessor | Provides communication processing |
| Bus Controller | Provides compatible industrial network connectivity |
| I/O Interface Module | Provides I/O system interfacing |
| HMI | Operator monitoring and control |
| Industrial Computer | Supervisory and data functions |
| Programming Workstation | PLC programming and configuration |
| Field Sensors | Provides process input signals |
| Actuators | Performs physical control actions |
The exact system configuration depends on the application requirements and existing Series 90-70 architecture.
Recommended Alternative Models
The following GE Series 90-70 components may be considered when evaluating controller, CPU, and communication requirements.
| Model | Type | Key Feature | Typical Application |
|---|---|---|---|
| IC697CPM790 | Central Processing Unit | Central PLC processing | Series 90-70 Control |
| IC697CGR772 | Central Processing Unit | PLC control processing | Industrial Automation |
| IC697CGR935 | Single-Slot Controller Module | Compact controller architecture | PLC Control |
| IC697CMM711 | Communication Coprocessor Module | Dedicated communication processing | PLC Communication |
| IC697CMM712 | Serial Communication Module | Serial data communication | Serial Device Integration |
| IC697CMM741 | Ethernet Controller Module | Ethernet communication | Industrial Network Integration |
| IC697CMM742 | Ethernet Interface Module | Ethernet interface connectivity | PLC Network Integration |
| IC697BEM771 | Bus Controller | Industrial bus communication | PLC Network Applications |
The IC697CGR772 can be evaluated when a compatible central processing solution is required.
The IC697CGR935 is a controller-oriented alternative with a different hardware architecture and should only be considered after verifying application compatibility.
The IC697CMM711, IC697CMM712, IC697CMM741, and IC697CMM742 are communication components rather than direct CPU replacements.
The IC697BEM771 provides bus-controller functionality and should not be treated as a direct substitute for a central processing unit.
Before selecting an alternative CPU, engineers should compare application-program compatibility, memory requirements, rack configuration, I/O architecture, communication requirements, firmware considerations, and overall controller capabilities.
Key Advantages
- Designed for compatible GE Fanuc Series 90-70 PLC systems
- Provides central PLC processing
- Executes programmed control logic
- Coordinates connected I/O modules
- Supports industrial machine control
- Suitable for manufacturing automation
- Suitable for process-control applications
- Supports modular PLC architecture
- Coordinates input and output processing
- Supports integration with communication modules
- Suitable for legacy automation maintenance
- Can form the central element of a Series 90-70 control system
- Supports centralized control logic execution
- Can coordinate multiple PLC system components
- Suitable for OEM machinery
- Suitable for production equipment
- Modular rack-based installation
- Specified dimensions of 180 × 50 × 105 mm
- Approximate weight of 0.78 kg
Technical FAQs
What is the GE IC697CPM790?
The GE IC697CPM790 is a Central Processing Unit designed for compatible GE Fanuc Series 90-70 PLC systems.
What is the main function of the IC697CPM790?
Its primary function is to execute the PLC application program, process input information, coordinate I/O operations, and generate control decisions.
Is the IC697CPM790 an I/O module?
No. It is a central processing unit. Digital and analog field signals are handled through the appropriate I/O modules connected to the PLC system.
What are the dimensions of the IC697CPM790?
The specified dimensions are approximately 180 × 50 × 105 mm.
How much does the IC697CPM790 weigh?
The specified weight is approximately 0.78 kg.
What type of PLC uses the IC697CPM790?
The module is associated with the GE Fanuc Series 90-70 PLC architecture.
What does a PLC CPU do?
A PLC CPU executes the application program, processes inputs, makes control decisions, updates outputs, manages internal data, and coordinates other controller functions.
What modules work with the IC697CPM790?
A compatible Series 90-70 system may include power supplies, digital and analog I/O modules, communication modules, network interfaces, racks, operator interfaces, and other compatible system components.
Can the IC697CPM790 control industrial machinery?
The CPU can serve as the central controller for compatible industrial machinery when configured with an appropriate PLC application and connected I/O hardware.
What can cause CPU-related PLC faults?
Possible causes include power problems, incorrect installation, hardware configuration errors, application-program issues, backplane problems, I/O faults, communication problems, or environmental conditions.
What should be checked before replacing the CPU?
Engineers should back up the PLC program and verify the rack, power supply, I/O configuration, communication modules, application compatibility, hardware configuration, and system requirements.
Is the IC697CPM790 suitable for legacy PLC maintenance?
It can be relevant to compatible Series 90-70 legacy automation systems where the required CPU architecture and application configuration are supported.
Can a communication module replace the IC697CPM790?
No. A communication module and a CPU have different functions. Communication modules provide network connectivity, while the CPU executes the main PLC control application.
Conclusion
The GE IC697CPM790 Central Processing Unit is a central control component for compatible GE Fanuc Series 90-70 PLC architectures. Unlike dedicated I/O or communication modules, its primary responsibility is to execute the PLC application program and coordinate the operation of the control system.
With specified dimensions of 180 × 50 × 105 mm and an approximate weight of 0.78 kg, the IC697CPM790 is designed for modular industrial control installations.
As the central processing element, the CPU can coordinate input modules, output modules, communication interfaces, and other components within the PLC architecture. This makes CPU selection especially important in legacy system replacement and maintenance projects.
The IC697CPM790 can be relevant to manufacturing automation, machine control, process control, material handling, OEM machinery, and other industrial applications using compatible Series 90-70 technology.
Before installing or replacing a CPU, engineers should verify the complete PLC architecture, including rack compatibility, power supply, I/O modules, application program, communication configuration, hardware configuration, and system requirements.
When properly integrated into a compatible Series 90-70 control system, the GE IC697CPM790 provides the central processing function required to execute control logic and coordinate industrial automation operations.