IC697CPM790-GD GE Fanuc Series 90-70 PLC CPU Module
Manufacturer: GE Fanuc
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Part Number: IC697CPM790-GD
Condition：New with Original Package
Product Type: CPU Processors
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE IC697CPM790-GD Series 90-70 CPU Module
The GE IC697CPM790-GD, also cataloged as the IC697CPM790 CPU Module, operates as a dedicated hardware component for real-time safety logic execution and 32-bit floating-point math processing within GE Fanuc Series 90-70 PLC rack platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC697CPM790-GD |
| Brand | GE Fanuc |
| Origin | USA |
| Weight | 0.28 kg |
| Dimensions | 160 mm x 100 mm x 30 mm |
| Operating Temp | -20 to +70 deg C |
| Power Consumption | 4 W at 5 VDC |
| Processor | Intel 80486DX2, 64 MHz |
| Onboard Memory | 1 MB battery-backed (512 KB dedicated logic) |
| Instruction Execution | 0.25 us integer; 2 us floating-point |
| Communication Ports | 1 x RS-232, 1 x RS-422/485 |
| Expansion Capacity | 1 dedicated option module slot; up to 256 local I/O |
| Mounting Type | Plug-in rack module |
Backplane Bus Communication Velocity and Firmware Compatibility
The module communicates directly over the Series 90-70 VME-based backplane, maintaining determinism across high-density I/O scans. High backplane bus communication velocity guarantees rapid data exchange between the CPU, local I/O, and dedicated expansion modules. Firmware flash compatibility controls prevent logic sync failures during hot-standby or TMR redundancy operations across dual or triple rack architectures.
Frequently Asked Questions
Q: How does the battery-backed RAM preserve logic programs during power cycles?
A: A lithium battery mounted on the module supplies continuous standby current to the onboard SRAM, preserving the 512 KB ladder program and register memory when 5 VDC backplane power is lost.
Q: What precautions are necessary for the serial communication ports when installing long-distance RS-422/485 runs?
A: Install termination resistors across the receiver terminals at both physical ends of the RS-422/485 network line. Use shielded twisted-pair cabling to prevent differential noise interference from high-voltage motor circuits.
Q: Is this CPU module hot-swappable while the Series 90-70 rack is energized?
A: Live removal or insertion of the CPU module is strictly prohibited. Inserting the module into an energized backplane damages the bus interface components and disrupts system logic execution.
Field Installation Guidelines
Align the card edge connectors with the Series 90-70 rack guide rails before applying firm pressure to seat the module into the backplane. Tighten the top and bottom retaining screws to secure the chassis connection and ensure a low-resistance protective earth path. Route serial communication lines separately from high-current power cables to minimize EMI coupling. Verify battery voltage levels using the diagnostic status registers before commissioning the system to prevent memory loss during unannounced power interruptions.