Description
GE HE693SNP306AX – SNP/SNPX Serial Communications Module for Series 90-30 PLCs
The GE (GE Fanuc) HE693SNP306AX is designed to add reliable serial communications to a Series 90-30 PLC system, typically using the GE SNP/SNPX protocol. From my experience, this module is the go-to when you need to connect programming stations, HMIs, data loggers, or third‑party devices over RS‑232 or RS‑485 without complicating the rack design. The “AX” suffix appears to indicate a later hardware revision, which in many cases means improved component longevity and, sometimes, conformal coating for tougher environments.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: 1 week if in stock; no more than 1 month at the latest
- Payment: 50% advance payment; full balance before delivery
- Express options: FedEx, UPS, DHL
Key Features
- GE SNP/SNPX protocol support – Ideal for programming access, HMI links, and plant data exchange with 90‑series PLCs.
- RS‑232/RS‑485 serial connectivity – You can run point‑to‑point connections (RS‑232) or multi‑drop networks (RS‑485) over longer distances.
- Backplane‑powered – Draws low power from the Series 90‑30 baseplate, so no external PSU clutter.
- Status LEDs – You might notice front indicators for module and comms status that make troubleshooting quicker on the floor.
- Rack‑friendly form factor – Fits standard 90‑30 slots; keeps your cabinet layout consistent.
- Industrial temperature range – Typically supports control cabinet conditions found in manufacturing plants.
Technical Specifications
| Item | Details |
|---|---|
| Brand / Model | GE Fanuc – HE693SNP306AX |
| HS Code | 8537.10 (Programmable controllers and related modules) |
| Power Requirements | 5 VDC supplied by 90‑30 backplane, typically around 0.4–0.6 A |
| Dimensions & Weight | Approx. 133 × 33 × 119 mm (5.24 × 1.30 × 4.69 in); ~0.30 kg |
| Operating Temperature | 0 to 60°C; 5–95% RH non‑condensing (typical for this series) |
| Signal Input/Output Types | Serial communication over RS‑232 (point‑to‑point) and RS‑485 (multi‑drop) |
| Communication Interfaces | SNP/SNPX; interface hardware typically includes RS‑232 (DB‑9) and RS‑485 terminals; 300–19.2 kbps common |
| Installation Method | Plugs into a GE Series 90‑30 baseplate slot (panel or DIN‑rail mounted baseplates) |
Application Fields
This module is commonly used in:
- Factory automation lines tying 90‑30 PLCs to HMIs via SNP/SNPX
- Utilities and water treatment plants where RS‑485 multi‑drop saves cabling costs
- Process skids and OEM machinery needing reliable serial polling from a central PLC
- Retrofit projects replacing aged operator terminals while keeping legacy PLC assets
Advantages & Value
- Drop‑in compatibility – Works within the 90‑30 ecosystem; no risky rewiring or requalification in most cases.
- Stable communications – SNP/SNPX is proven across legacy GE deployments; maintenance teams typically know it well.
- Lower lifecycle cost – Extends useful life of installed PLCs and HMIs without a full system migration.
- Spares strategy – Keeping a known‑good comms module on hand usually shortens downtime after faults.
- Technical familiarity – Supported by common GE toolchains (e.g., Proficy Machine Edition or legacy Logicmaster 90), depending on CPU firmware.
Installation & Maintenance
- Cabinet & mounting – Install in a clean, dry control cabinet; ensure the 90‑30 baseplate is firmly panel‑ or DIN‑mounted with adequate ventilation.
- Wiring practices – Use shielded twisted pair for RS‑485; ground the shield at one end; apply 120 Ω termination at the bus ends; keep RS‑232 runs short.
- Power budget – Verify the 5 V backplane capacity, especially if you have multiple comms or analog modules loaded.
- Configuration – Set baud, parity, and SNP node addresses consistently; in many cases this is done via software, while some revisions use onboard switches.
- Safety & ESD – De‑energize the rack before insertion/removal; use ESD protection when handling the module.
- Routine maintenance – Periodically check connectors, clean dust with dry air, and back up configuration. Firmware updates may apply depending on CPU and toolchain.
Quality & Certifications
- Typically CE and UL/cUL compliant for industrial control equipment
- Manufactured under ISO 9001 quality systems (brand level)
- RoHS status may vary by production date; we can check specific date codes on request
- Our warranty coverage: 365 days
Supporting Components (for smoother integration)
Teams pairing the HE693SNP306AX often order related 90‑30 hardware at the same time. You might consider:
- Series 90‑30 CPUs (e.g., IC693CPU3xx) and baseplates (IC693CHSxxx)
- 90‑30 power supplies (IC693PWR3xx) with enough 5 V capacity for comms modules
- SNP programming cable (RS‑232, DB‑9) and RS‑485 terminal hardware
- Operator interfaces compatible with SNP/SNPX (e.g., GE QuickPanel series)
One thing I appreciate is how predictable these modules are in the field—once the node addressing and baud are aligned, they tend to run for years. If your site has mixed vintages of 90‑30 equipment, share the CPU model and firmware and we’ll double‑check the best configuration so you don’t lose time during commissioning.
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