Applications
The IC697MEM715 is widely used in advanced PLC systems where standard memory is insufficient. Typical applications include:
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Large-scale manufacturing control systems
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Complex process automation with extensive logic routines
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Multi-task PLC environments with high data logging needs
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Systems requiring program version expansion or backup storage
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Industrial coprocessor-based automation architectures
Its ability to expand memory without redesigning the controller makes it highly valuable for system upgrades and modernization projects.
Advantages
One of the strongest advantages of the IC697MEM715 is its seamless integration design. As a daughterboard module, it fits directly into the host CPU slot, eliminating the need for additional hardware space. This makes it especially attractive for compact industrial cabinets where space optimization is critical.
The battery-backed CMOS architecture ensures that critical program data is preserved even during power loss, supporting operational continuity. Combined with automatic checksum error checking by the CPU, the module provides a high level of data integrity and system stability.
It is also highly flexible in capacity options, allowing engineers to scale memory based on application complexity—from small control logic systems to large, data-heavy automation environments.
Technical FAQs
1. What is the main purpose of IC697MEM715?
It expands the memory capacity of GE Series 90-70 PLC systems.
2. Which CPUs are compatible with this module?
It is used with CPU 771, CPU 772, and IC697PCM711 modules.
3. Does it require a separate rack slot?
No, it installs as a daughterboard inside the host module slot.
4. What type of memory does it use?
It uses CMOS static RAM technology.
5. Is the memory retained during power loss?
Yes, memory is retained via a lithium battery backup system.
6. How long does memory retention last without power?
Typically up to about six months depending on conditions.
7. What is the battery lifespan?
The lithium battery can last up to 10 years.
8. Can memory be expanded in different sizes?
Yes, it is available in multiple configurations (64–512 KB).
9. Is programming required for installation?
No special configuration is required beyond system recognition.
10. What happens during system reset?
The CPU performs checksum verification to ensure data integrity.