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Phone: +86 16626708626Description
Product Model: IC697MEM731F
Product Brand: GE (General Electric / GE Fanuc / Emerson)
Product Series: Series 90-70 PLC Expansion Modules
Product Features:
• Field-installable expansion memory module for increased program/data capacity.
• CMOS architecture with battery-backed retention and system checksum error checking.
• No additional rack slot required — installs as a daughterboard on supported CPUs
• Supports data and program storage with up to 128 KB/256 KB memory options.
Technical Specifications Table
| Specification | Detail |
|---|---|
| Product Model | IC697MEM731F |
| Product Type | Memory Expansion Module |
| Product Brand | GE (General Electric / GE Fanuc / Emerson) |
| Series | Series 90-70 PLC Memory |
| Memory Architecture | 32-Bit CMOS |
| Capacity Options | 128 KB / 256 KB (variant dependent) |
| Installation Method | Daughterboard on CPU memory socket |
| Power Supply | Powered via CPU backplane |
| Battery Backup Support | Utilizes CPU lithium battery |
| Error Checking | Parity generation & CPU checksum routines |
| Compatible CPUs | Series 90-70 780, 781, 782, 788, 789 CPUs |
| Rack Slot Requirement | No additional slot (daughterboard) |
| Typical Retention w/o Power | ~6 months nominal without main power |
| Shelf Life | ~10 years at ~20 °C |
- IC697MEM731F
Product Role & System Fit
In modular industrial controllers, memory capacity directly influences the complexity of automation logic that a system can host. The IC697MEM731F expansion memory module is a critical component in GE Series 90-70 PLC architectures, designed to extend the onboard memory of compatible CPU units without occupying an extra rack slot.
At its core, the IC697MEM731F functions as a daughterboard-style memory expansion device that installs directly into the CPU unit’s memory socket. Unlike plug-in I/O cards or communication adapters, this memory module resides on the same physical plane as the host CPU — effectively augmenting how much program logic and data the controller can retain and access during operation. This integration is particularly valuable in systems where the base RAM may be insufficient to accommodate complex logic sequences, high device counts, or extensive data aggregation.
Compatibility with multiple CPU models in the Series 90-70 line — including popular 780, 781, 782, 788, and 789 variants — ensures flexibility across different performance classes and legacy configurations. In practice, upgrading to the IC697MEM731F allows engineers to increase memory capacity with minimal disruption to existing installations, making it suitable for incremental expansions or system modernization strategies.
For systems architects, the module is also a non-disruptive enhancement: because it installs in the CPU slot and leverages existing backplane power and communication paths, it does not change the PLC’s physical footprint. This design choice simplifies serviceability and reduces panel clutter — a practical benefit in constrained industrial cabinets.
