Description
GE Fanuc IC697CPU731 – Series 90-70 CPU Module for high-performance PLC control
The GE Fanuc IC697CPU731 is a classic Series 90-70 CPU module designed for large, mission‑critical PLC applications. It slots into an IC697 rack and, in most cases, runs reliably for years with very little intervention. One thing I appreciate is how it balances mature, stable hardware with flexible expansion—Ethernet, Genius, and other networks can be added via standard IC697 communications modules. If you maintain legacy lines or need a drop‑in replacement to minimize downtime, this model typically makes the transition smooth with existing 90‑70 I/O and programming tools.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: 1 week for in‑stock items; no more than one month at the latest
- Payment: 50% advance payment, full payment prior to delivery
- Express: FedEx, UPS, DHL
Key Features
- Series 90‑70 platform – Works with the proven IC697 ecosystem, which many plants still rely on for continuous operation.
- Single‑slot CPU design – Saves rack space; installs in the designated CPU slot of the IC697 rack without special adapters.
- Programmer serial port – Typically provides an RS‑232 SNP/SNPX port for programming and diagnostics with Logicmaster 90‑70 or Proficy Machine Edition.
- Expandable communications – Add Ethernet TCP/IP, Genius, or other networks using standard IC697 communications modules, keeping the CPU core unchanged.
- Battery‑backed memory – Uses IC697 memory modules (IC697MEM7xx) for user program and data retention; ideal for brownouts or planned shutdowns.
- Industrial operating range – Designed for cabinet‑mounted use in typical factory environments where 0–60°C is common.
- Long‑term serviceability – Spare parts and accessories remain available in many markets; makes life easier for MRO teams.
Technical Specifications
| Brand / Model | GE Fanuc IC697CPU731 (Series 90‑70 CPU Module) |
| HS Code | 8537.10 (Programmable controllers / control panels) |
| Power Requirements | 5 VDC via IC697 backplane; typical draw around 1–2 A (model and configuration dependent) |
| Dimensions & Weight | Single‑slot IC697 form factor; standard 90‑70 rack height; approx. 0.6–0.9 kg |
| Operating Temperature | 0 to 60 °C (32 to 140 °F), 5–95% RH non‑condensing typical for Series 90‑70 |
| Signal I/O Types | No onboard discrete/analog I/O; uses IC697 I/O modules and remote I/O networks |
| Communication Interfaces | 1 × RS‑232 programmer port (SNP/SNPX); Ethernet, Genius, Profibus, and others via optional IC697 communication modules (e.g., IC697 Ethernet TCP/IP module) |
| Programming Software | Logicmaster 90‑70 (legacy) or Proficy Machine Edition, depending on plant standards |
| Memory Support | IC697MEM7xx modules for user program/data; battery‑backed RAM; nonvolatile options available per module type |
| Installation Method | Mounts in the CPU slot of an IC697 90‑70 rack; front‑access connectors for programmer port and memory module |
Application Fields
From my experience, the IC697CPU731 is typically chosen for lines that must stay compatible with existing 90‑70 infrastructure while keeping downtime minimal:
- Process industries (chemicals, batch, utilities) where stable scan cycles and proven logic are valued
- Discrete manufacturing and automotive cells using established IC697 I/O and Genius‑based remote I/O
- Power, water/wastewater plants with legacy redundancy or long validated configurations
- Material handling, steel, and heavy industry where ruggedized cabinet PLCs are standard
Advantages & Value
- Reliability – 90‑70 hardware has a reputation for long service life; many units run for decades with routine maintenance.
- Compatibility – Reuses your existing IC697 racks, I/O, and many communications modules; no need to redesign the whole panel.
- Cost control – A direct CPU swap typically reduces engineering hours, revalidation time, and training compared to full platform migrations.
- Supportability – Documentation, spare parts, and service know‑how are widely available; technicians are usually familiar with the toolchain.
Installation & Maintenance
- Cabinet & rack – Install in an IC697 rack within a ventilated, dry control cabinet. Maintain clearance for airflow and cable bend radius.
- Power & grounding – Use a properly sized IC697 power supply. Ensure protective earth and signal grounding are clean to avoid comms noise.
- Wiring – Use shielded cables for the programmer port and network modules; segregate low‑level signals from high‑voltage power wiring.
- Environment – Keep within 0–60 °C and non‑condensing humidity. Avoid corrosive atmospheres unless cabinet is rated accordingly.
- Memory & battery – Check the memory module part and battery status during PMs. Battery packs are usually replaced every 3–5 years.
- Firmware & backups – Verify CPU and comms module firmware levels are compatible. Keep off‑line backups of the user program and hardware configuration.
Quality & Certifications
- Manufacturer quality system: ISO 9001 (typical for GE Fanuc manufacturing)
- Product safety approvals: UL/cUL and CE (typical for Series 90‑70)
- RoHS: many original units pre‑date RoHS; compliance may vary by vintage and region
- Seller warranty: 365 days











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