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128KB CMOS Memory Module
IC697MEM715B
Spare Part Number
PNIC697MEM715B
Product Information:
a CMOS expansion memory manufactured
by GE Automation and Controls. IC697MEM715
is available in different versions: 64 KB, 128 KB,
256 KB, and 512 KB. Typically these memories
are used to expand the data and logic memory
in CPU 772/771 modules or in the programmable
co-processor module (alternatively known as
IC697PCM711). IC697MEM715 is configurable
for both data and program storage.
Product image is representative; revision or series may vary. Contact us to request a specific version.
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1. What is the fundamental memory augmentation mechanism implemented in the IC697MEM715B, and how does it extend the volatile/non-volatile address space of Series 90-70 PLC systems?
The IC697MEM715B functions as a battery-backed CMOS memory expansion module, designed to extend the addressable memory capacity of Series 90-70 PLC architectures. It provides deterministic data retention by maintaining critical program and data structures during power loss conditions.
2. How does the IC697MEM715B ensure data persistence integrity under extended power-off conditions?
The IC697MEM715B employs lithium battery-supported CMOS retention architecture, enabling long-term preservation of user program data and configuration parameters even during prolonged power interruptions, typically maintaining integrity for months depending on environmental conditions.
3. What is the maximum memory capacity configuration supported by the IC697MEM715B within the Series 90-70 system topology?
The IC697MEM715B is engineered to support high-capacity memory expansion up to the upper limits of the Series 90-70 addressing framework, typically enabling system memory scaling in modular increments when paired with compatible CPU modules.
4. How does the IC697MEM715B interface with the PLC backplane to achieve deterministic memory access synchronization?
The IC697MEM715B integrates directly into the Series 90-70 rack backplane architecture, allowing high-speed parallel memory access through shared system bus communication, ensuring deterministic read/write cycles without protocol overhead.
5. What are the architectural implications of the IC697MEM715B on PLC scan cycle optimization and system throughput?
By increasing available program and data storage, the IC697MEM715B reduces memory fragmentation constraints in the host CPU, thereby optimizing scan cycle determinism, task scheduling efficiency, and execution throughput stability.
6. How does the IC697MEM715B maintain data coherence during simultaneous CPU and memory module access operations?
The IC697MEM715B implements bus arbitration and synchronized access timing mechanisms, ensuring data coherence between CPU instruction fetch cycles and memory read/write operations within the shared backplane environment.
7. What role does the IC697MEM715B play in non-volatile program retention strategies within industrial automation systems?
The IC697MEM715B acts as a non-volatile program retention layer, safeguarding ladder logic, configuration parameters, and runtime data structures against system shutdowns, thereby ensuring rapid system recovery upon restart.
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Moore Disclaimer: Moore Automated's sales automation equipment and related solutions are intended for industrial automation and business operational efficiency improvement purposes only. Product information, technical parameters, and application cases are for reference only and do not constitute an absolute guarantee of performance for any specific industry, scenario, or final application. Actual equipment performance may vary depending on factors such as the usage environment, system integration method, and maintenance conditions. Users should confirm compatibility and safety based on professional technical assessments. Moore Automated assumes no liability for any direct or indirect losses caused by improper use, modification, or failure to operate according to specifications, to the extent permitted by law.