IC693CMM301
May 11, 2026

IC693CMM301

1. Product Overview The IC693CMM301 is an intelligent Genius Communications Module (GCM) for the GE Fanuc (Emerson) Series 90-30 PLC. It enables automatic, high-speed Global Data exchange between a Series 90-30 PLC and up to 7 other Genius bus devices (PLCs, I/O systems, or PCs), forming a shared real-time database for industrial automation.

Description

1. Product Overview

The IC693CMM301 is an intelligent Genius Communications Module (GCM) for the GE Fanuc (Emerson) Series 90-30 PLC. It enables automatic, high-speed Global Data exchange between a Series 90-30 PLC and up to 7 other Genius bus devices (PLCs, I/O systems, or PCs), forming a shared real-time database for industrial automation.
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Key Features

  • Genius Bus Communication: Noise-immune network for fast, reliable real-time control data transmission.

  • Global Data Exchange: Up to 256 bits (32 bytes) of configurable global data (32-bit increments).

  • Multi-Device Support: Connects to up to 7 additional Genius devices (Series 90-30/90-70 PLCs, HHP, or PCs).

  • Dual Status LEDs: OK (module health) and COM (bus activity) for instant diagnostics.

  • No Jumpers/DIP Switches: Software-configurable via handheld programmer or Logicmaster 90 software.

  • Industrial Hardening: Designed for high electrical noise and vibration environments.

2. Technical Specifications

2.1 General

1. Product Overview
The IC693CMM301 is an intelligent Genius Communications Module (GCM) for the GE Fanuc (Emerson) Series 90-30 PLC. It enables automatic, high-speed Global Data exchange between a Series 90-30 PLC and up to 7 other Genius bus devices (PLCs, I/O systems, or PCs), forming a shared real-time database for industrial automation.
ParameterSpecification
ManufacturerGE Fanuc (Emerson)
SeriesSeries 90-30 PLC
ModelIC693CMM301
TypeGenius Communications Module (GCM)
Global Data Capacity256 bits (32 bytes), configurable in 32-bit increments
Max Genius Devices8 total (1 local + 7 remote)
Power Consumption≤ 5 W (from backplane)
Dimensions (W×H×D)4.33 × 2.76 × 1.38 in (110 × 70 × 35 mm)
WeightApprox. 0.66 lbs (0.3 kg)

2.2 Environmental

ParameterSpecification
Operating Temperature0°C to +60°C (32°F to 140°F)
Storage Temperature-25°C to +70°C (-13°F to 158°F)
Relative Humidity5% to 95% (non-condensing)
Vibration0.2 in displacement (5–10 Hz); 1 G (10–200 Hz)
Shock5 G (10 ms duration)
Protection ClassIP20 (front panel)

2.3 Compatibility

Compatible ItemsDetails
PLC HostSeries 90-30 CPU331 or higher
Genius DevicesSeries 90-30/90-70 PLCs, Genius I/O modules, HHP, PCs (with PCIM card)
Configuration ToolsHandheld Programmer (HHP), Logicmaster 90, or Machine Edition software

3. Functional Description

3.1 Genius Bus & Global Data

The Genius bus is a differential, noise-immune network that automatically broadcasts Global Data—predefined data shared across all connected devices. The IC693CMM301 exchanges data cyclically (user-configurable rate) to maintain a synchronized database without continuous programming.

3.2 Data Exchange Modes

  • Producer Mode: Sends local PLC data (%G memory) to the Genius bus.

  • Consumer Mode: Receives data from other Genius devices into the local PLC’s %G memory.

  • Mixed Mode: Simultaneously produces and consumes data (most common).

3.3 Bus Topology

  • Multidrop: Linear or star topology (up to 8 devices).

  • Cable: Shielded twisted pair (Genius bus cable).

  • Max Distance: 500 m (1,640 ft) at 153.6 kbps; longer distances with repeaters.

4. Installation & Wiring

4.1 Module Installation

  1. Power Off: Shut down the PLC system and disconnect all power sources.

  2. Baseplate Slot: Insert the IC693CMM301 into any available I/O slot (Slots 2–9) on a Series 90-30 baseplate (e.g., IC693CHS391).

  3. Secure: Tighten the front-panel screws to ensure firm backplane contact.

  4. Power On: Restore system power; check that the OK LED lights steadily (green).

4.2 Genius Bus Wiring

  1. Connector: Use the front-panel Genius bus port (DB9 or terminal block, per revision).

  2. Cable: Connect shielded twisted-pair cable to the bus port; ground the shield at one end only.

  3. Termination: Add 120 Ω termination resistors at the two physical ends of the bus (critical for signal integrity).

  4. Device Addressing: Assign unique Genius addresses (1–8) to each device via software configuration.

5. Configuration

5.1 Software Requirements

  • Logicmaster 90 (legacy) or PACSystems Machine Edition (modern).

  • Handheld Programmer (HHP) (portable configuration option).

5.2 Configuration Steps

  1. Add Module: In the software project, insert the IC693CMM301 into the correct baseplate slot.

  2. Set Bus Parameters:

    • Baud Rate: 153.6 kbps (default), 76.8 kbps, or 38.4 kbps.

    • Module Address: Unique Genius address (1–8).

    • Global Data Size: Allocate 32–256 bits (32-bit increments) to %G memory.

  3. Map Data: Define which local %G addresses to produce (send) and which remote addresses to consume (receive).

  4. Download: Transfer the configuration to the PLC; the module initializes and joins the Genius bus.

6. LED Indicators

LEDColorStatusDescription
OKGreenSteady OnModule powered, self-test passed, operational
OKGreenBlinkingSelf-test in progress or minor fault
OKOffNo power or critical module failure
COMYellow/GreenSteady OnGenius bus active, no errors
COMYellow/GreenBlinkingBus communication errors (e.g., noise, collision)
COMOffNo bus activity or bus disconnected

7. Maintenance & Troubleshooting

7.1 Routine Maintenance

  • Visual Inspection: Check for loose cables, damaged connectors, or bent module pins.

  • LED Check: Verify OK (steady green) and COM (steady yellow/green) during normal operation.

  • Cleaning: Blow compressed air through ventilation slots to remove dust (power off first).

  • Configuration Backup: Regularly save and back up module configuration files.

7.2 Common Issues & Solutions

SymptomPossible CauseSolution
OK LED OffNo backplane power or module failureCheck PLC power supply; reinsert module; replace if faulty
COM LED BlinkingBus noise, incorrect termination, or address conflictCheck cable shielding; verify termination resistors; confirm unique device addresses
No Global Data ExchangeIncorrect data mapping or bus baud rate mismatchReview software configuration; ensure all devices use the same baud rate
Module Not RecognizedPoor backplane contact or incompatible CPUReinsert module; verify CPU is model 331 or higher

8. Ordering Information

  • Model: IC693CMM301

  • Description: Series 90-30 Genius Communications Module (GCM)

  • Accessories:

    • IC693CBL310: Genius bus cable (3 m)

    • IC693CBL311: Genius bus cable (10 m)

    • IC693ACC310: 120 Ω termination resistor kit

9. Compliance & Certifications

  • CE: Compliant with EU EMC and LVD Directives.

  • UL: UL 508 Listed for Industrial Control Equipment.

  • RoHS: Compliant with Restriction of Hazardous Substances.

  • IEC: Compliant with IEC 61131-2 (Programmable Controllers).

10. Disclaimer

This document is for reference only. For the latest and most detailed information, refer to the official GE Fanuc (Emerson) Series 90-30 Genius Communications Module Manual (GFK-0412). The manufacturer reserves the right to modify specifications without prior notice.


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