Overview
Configured for PLC program execution and CPU control in the Series 90-70 platform, the GE Fanuc Emerson IC697CPU780 (IC697CPU780 CPU module) uses an 80386DX microprocessor to execute Boolean logic and floating-point calculations. The module operates at 16 MHz and supports hot standby CPU configurations. It also provides 12 KB of discrete I/O memory and 8 KB of analog I/O memory.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC697CPU780 |
| Brand | GE Fanuc Emerson |
| Product Type | CPU Module |
| Product Line | Series 90-70 |
| Product Description | Single-slot CPU |
| Weight | 1.00 lb (0.45 kg) |
| Power Consumption | 1.6 A current draw |
| Processor Type | 80386DX microprocessor |
| Clock Speed | 16 MHz |
| Boolean Execution Speed | 0.4 microseconds per Boolean function |
| Discrete I/O Memory | 12 KB |
| Analog I/O Memory | 8 KB |
| Maximum Memory | 512 KB |
| Floating-Point Math | Supported |
| Input Voltage | 5 VDC |
| Communication Port | RS485 interface |
| Hot Standby Operation | Supported |
| Specific Application | Hot Standby configuration |
| Compatibility | GE Fanuc Series 90-70 PLCs |
| Module Position | Single slot |
| LED Indicators | Module OK, RUN, and additional status indicators |
CPU Processing and Communication
The IC697CPU780 executes PLC logic through its 80386DX processor at a 16 MHz clock speed. Its specified Boolean execution time is 0.4 microseconds per Boolean function. In addition, the CPU supports floating-point mathematics for applications that require numerical calculations beyond Boolean operations.
The module provides 12 KB of discrete I/O memory and 8 KB of analog I/O memory. Therefore, the CPU can address both discrete and analog data within its specified memory allocation. The supplied data also specifies an RS485 communication interface for serial communication.
Frequently Asked Questions
Q: What processor does the IC697CPU780 use?
A: The module uses an 80386DX microprocessor with a 16 MHz clock speed.
Q: Does the IC697CPU780 support redundant CPU operation?
A: Yes. The supplied specifications identify the module for Hot Standby CPU configurations.
Q: What voltage does the CPU module use?
A: The supplied data specifies a 5 VDC input voltage and a current draw of 1.6 A.
Field Installation Guidelines
Install the IC697CPU780 in its designated single-slot position within a compatible Series 90-70 PLC rack. Before installation, isolate the rack from its electrical supply and verify the module orientation against the system hardware documentation.
Connect the module through the specified rack and communication interfaces. Keep RS485 communication wiring separated from high-current power conductors where practical to reduce electrical interference. Route communication cables with controlled bends and avoid unnecessary parallel runs with switching power circuits.
Verify the 5 VDC supply and rack connections before energizing the system. After installation, check the module status LEDs and confirm the expected CPU operating state. For Hot Standby configurations, verify the complete redundant CPU arrangement against the applicable Series 90-70 system documentation.
