Description
Product Overview
The GE Fanuc IC693CMM321-JJ is an Ethernet Interface Module designed for the Series 90-30 programmable logic controller platform. The module provides network connectivity between a Series 90-30 PLC rack and industrial Ethernet systems, allowing engineers to connect PLC applications with HMIs, SCADA platforms, programming stations, and other automation controllers. The GE Fanuc IC693CMM321-JJ extends the communication capability of legacy Series 90-30 systems that were originally designed around serial and proprietary communication methods.
Installed as a single-slot option module, the GE Fanuc IC693CMM321-JJ manages Ethernet-based data exchange using GE Fanuc SRTP communication services and supports client/server communication functions. The module can handle multiple server connections, allowing supervisory systems and other control devices to access PLC data without interrupting the primary control program. Depending on hardware revision and system configuration, the CMM321 family supports Ethernet interfaces through AAUI transceiver connections or integrated 10BASE-T options.
The GE Fanuc IC693CMM321-JJ remains widely used in manufacturing facilities maintaining Series 90-30 PLC installations where replacing the complete control architecture would create unnecessary downtime and engineering effort. Typical applications include machine automation, material handling systems, process skids, and production equipment requiring PLC network access. Before replacement, engineers should verify CPU firmware level, power supply compatibility, Ethernet cabling requirements, and existing communication configuration. To be completely transparent, this module provides the communication path only; PLC logic, network parameters, and HMI communication settings must be preserved separately and restored after hardware replacement.
Product Introduction (Non-Templated)
A disconnected PLC network can stop data collection, operator visibility, and remote diagnostics even when the control program continues running. The GE Fanuc IC693CMM321-JJ restores Ethernet connectivity for Series 90-30 automation systems.
Designed for industrial communication applications, this module supports SRTP networking, PLC data exchange, and integration with HMI and SCADA systems while preserving existing Series 90-30 installations.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | IC693CMM321-JJ |
| Manufacturer | GE Fanuc |
| Product Type | Ethernet Interface Module |
| Product Series | Series 90-30 PLC |
| Communication Protocol | SRTP over TCP/IP |
| Additional Protocol Support | Modbus/TCP (revision dependent) |
| Network Interface | Ethernet via AAUI / compatible interface configuration |
| Maximum Server Connections | 16 |
| Installation | Single-slot PLC baseplate mounting |
| Serial Interface | RS-232 Station Manager Port |
| Loader Interface | RS-485 Serial Port |
| Power Requirement | 5 VDC backplane power |
| Compatible CPU | Series 90-30 CPU firmware 6.50+ recommended |
| Programming Software | Logicmaster 90-30 / VersaPro / compatible tools |
| Application | PLC networking, HMI, SCADA, controller communication |
| Condition | New Surplus, Factory Sealed |
Related Products
- GE Fanuc IC693CMM321 — Base CMM321 Ethernet Interface Module family. The -JJ revision identifies a specific hardware revision within the same communication platform.
- GE Fanuc IC693CMM321-KM — Later CMM321 revision commonly selected for updated Series 90-30 Ethernet communication requirements.
- GE Fanuc IC693CPU364 — Series 90-30 CPU with integrated Ethernet capability. Used when combining controller processing and network communication into one module.
- GE Fanuc IC693CPU374 — Higher-performance Series 90-30 CPU featuring integrated Ethernet communication functions.
- GE Fanuc IC693PWR321 — Standard Series 90-30 power supply module. Required for compatible rack installations and proper backplane power delivery.
- GE Fanuc IC693CMM311 — Serial communication module supporting SNP/SNPX and CCM communication applications.
- GE Fanuc IC693CMM301 — Genius Communications Module used for Genius network integration within Series 90-30 systems.
- GE Fanuc IC693PCM300 — Programmable Coprocessor Module used for specialized communication and application processing tasks.
Frequently Asked Questions (FAQ)
1. Is the GE Fanuc compatible with my existing Series 90-30 PLC system?
The module is designed for GE Fanuc Series 90-30 PLC platforms, but compatibility depends on the complete rack configuration.
Verify:
- CPU model and firmware version
- Power supply model
- Baseplate type
- Existing Ethernet configuration
- PLC programming software version
The communication module must match the installed PLC environment.
IC693CMM321-JJ
2. Can I hot-swap this?
No. The should not be treated as a hot-swappable communication device.
Recommended replacement process:
- Backup PLC project data
- Record Ethernet settings
- Shut down PLC power
- Replace the communication module
- Restore network parameters
- Test HMI and SCADA communication
A controlled restart avoids unexpected communication faults.
3. Does the support firmware v3.1?
The CMM321-JJ revision is hardware-specific, and firmware compatibility depends on the installed Series 90-30 software environment.
Check:
- CMM321 firmware revision
- CPU firmware version
- Programming software release
- Existing SRTP configuration
The module and PLC CPU firmware must be evaluated together.
4. Will I lose my PLC logic when replacing the ?
No. The Ethernet Interface Module does not contain the main PLC application logic.
Before replacement:
- Save PLC program files
- Backup communication settings
- Record IP configuration
- Document HMI connections
The PLC CPU stores the control program; the CMM321 manages communication functions.
5. How can I verify a New Surplus GE Fanuc is authentic?
Recommended inspection points:
- Confirm GE Fanuc identification label
- Verify part marking
- Inspect Ethernet and serial connectors
- Check module housing condition
- Review inspection documentation
For legacy PLC communication modules, revision matching is important.
6. Can the support a legacy PLC network upgrade?
Yes, when the existing automation system uses Series 90-30 controllers.
Typical applications:
- Adding Ethernet access to older PLC systems
- Restoring HMI communication
- Reconnecting SCADA monitoring
- Supporting machine refurbishment projects
The existing network architecture should be reviewed before installation.
7. What should engineers check before commissioning this module?
Key verification steps:
- Confirm CPU firmware compatibility
- Install module in correct rack position
- Configure IP communication settings
- Verify SRTP connections
- Test HMI/SCADA data exchange
- Check diagnostic indicators
These checks confirm proper Ethernet communication between the PLC and connected automation devices.
