GE IC697MEM717B Series 90-70 CMOS Memory Expansion Module
Manufacturer: GE Fanuc
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Part Number: IC697MEM717B
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE Fanuc IC697MEM717B Series 90-70 Expansion RAM Module
Configured for high-speed user program storage and register data expansion in Series 90-70 PLC architectures, the GE Fanuc IC697MEM717B (IC697MEM717 Expansion RAM Module) provides direct physical memory allocation without occupying an additional backplane slot.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IC697MEM717B |
| Brand | GE Fanuc |
| Origin | United States |
| Weight | 0.09 kg (0.19 lbs) |
| Dimensions | 25 mm x 130 mm x 100 mm |
| Operating Temp | 0 to +60 deg C |
| Power Consumption | 0.35 A max at 5 VDC |
| Memory Capacity | 256 KB |
| Memory Type | CMOS Static RAM (battery-backed) |
| Bus Interface | Direct expansion via Series 90-70 CPU/PCM backplane slot |
| Access Speed | 70 ns typical |
| Compatibility | CPU 771, CPU 772, PCM modules (Firmware v4.0 and higher) |
Backplane Bus Communication Velocity & Memory Scaling
The module connects via a single edge connector directly to the Series 90-70 backplane bus interface, drawing 0.5 A maximum regulated power at 5 VDC. By operating with high-speed CMOS access times under 200 ns (70 ns typical), the system executes deterministic read/write operations for ladder logic and I/O image data without introducing wait states to the primary CPU scan cycle. Onboard battery-backed circuitry ensures complete memory contents remain fully intact during main power interruptions.
Frequently Asked Questions
Q: Does the IC697MEM717B require a dedicated rack slot for installation?
A: No, the module installs directly into the expansion slot of a compatible CPU (such as CPU 771 or CPU 772) or PCM module, leaving standard rack slots open for additional I/O cards.
Q: How is data protected against corruption during a main system shutdown?
A: Program and register data are preserved by the battery-backed lithium cell on the host CPU or PCM board, supplemented by automated CPU checksum routines executed during runtime.
Field Installation Guidelines
Ensure the main PLC rack power supply is completely de-energized prior to inserting or removing the module. Align the single edge connector precisely with the internal CPU memory expansion slot to prevent pin distortion. Maintain proper ESD grounding procedures by utilizing an antistatic wrist strap connected to the enclosure frame during handling. When replacing the host lithium battery, power up the system or follow hot-swap battery maintenance protocols to avoid volatile RAM data wipeout.