GE IC697CPU780

Overview and Control Capabilities

The GE Fanuc IC697CPU780 is an expandable PLC processor developed for Series 90-70 automation systems. Featuring a 16 MHz, 32-bit processor, it handles industrial control logic and supports floating-point mathematical operations.

One of its important characteristics is its suitability for hot standby CPU redundancy. In this configuration, two CPUs operate as primary and secondary units. This arrangement helps maintain control system availability when the active processor experiences a hardware failure.

Functional Characteristics

Processing Performance

The CPU provides 0.4 microseconds per Boolean function, supporting responsive execution of industrial control programs.

Memory Management

Compatible expansion memory boards allow users to extend available program and data storage. Battery-backed memory also helps preserve important information during power interruptions.

Communication and Expansion

The module communicates with rack-mounted I/O and intelligent option modules through the backplane. Furthermore, its RS422/RS485-compatible serial interface supports programmer connections.

Hardware Specifications

• Manufacturer: GE Fanuc

• Model: IC697CPU780

• Product Family: Series 90-70

• CPU Architecture: 32-bit

• Processor Frequency: 16 MHz

• Processor Type: 80386DX

• Boolean Execution Time: 0.4 μs

• 5V Bus Current: 1.6 A

• Serial Interface: RS422/RS485 compatible

• Mounting: Single-slot PLC rack

Design and Operational Advantages

The IC697CPU780 combines processing, memory management, and system communication functions in one rack-mounted module.

Its front panel provides operating controls and status indicators for monitoring CPU conditions. Moreover, software-based configuration eliminates the need for conventional DIP switches or configuration jumpers.

The processor also supports memory protection functions. These features help technicians manage program access and maintain the configured control logic.

Typical Applications

The module is particularly relevant to industrial installations that require dependable PLC processing, including:

• Power plant automation

• Continuous production lines

• Industrial process control

• Heavy manufacturing equipment

• Material transportation systems

• Redundant machine control installations

Installation and Service Considerations

Proper rack installation and system configuration are essential for stable operation. Technicians should follow the GE Series 90-70 installation documentation when inserting or removing the module.

Battery condition deserves particular attention because the battery supports memory retention and the internal calendar clock. In addition, periodic diagnostic checks can help identify hardware faults before they affect production.

Conclusion

The GE IC697CPU780 combines expandable processing capabilities with floating-point support and hot standby functionality. It remains an important processor platform for compatible GE Series 90-70 industrial automation systems.