GE Fanuc IC697RCM711 Redundancy Communication Module

IC697RCM711 GE Fanuc PLC Redundancy Module

Product Introduction

The IC697RCM711 belongs to the GE Fanuc Series 90-70 PLC family and serves as a core component for redundancy configurations. Its primary role is to maintain a continuous synchronization link between two CPU units operating in Hot Standby or Enhanced Hot Standby modes. When the active controller fails or requires maintenance, this module facilitates an automatic or manual transfer of control without disrupting the production process.

This communication module supports a maximum cable distance of 15 meters (50 feet), which allows the paired CPUs to be physically separated across different cabinets or sections of a plant. Furthermore, it delivers an effective data rate of 500 KB per second, ensuring fast I/O updates and status mirroring. The IC697RCM711 also includes a manual pushbutton for initiating switchovers on demand, giving operators direct control over system redundancy.

Technical Specifications

The IC697RCM711 operates on a 5V DC backplane and draws 1.2 Amperes of current. It is compatible with the VME bus architecture, a standard feature of the Series 90-70 platform. The module uses non-isolated differential communication, which simplifies cabling while maintaining reliable signal integrity over the specified distance.

Key parameters include:

• Data transfer rate: 500 KB/s

• Maximum cable length: 15 meters (50 feet)

• Compatible CPUs: IC697CPU780, IC697CGR772, and IC697CGR735

• Required companion module: IC697BEM713 Bus Transmitter Module

• Termination plug: IC697ACC702

For connectivity, users can choose from several cable options. The IC600WD005 (1.5m), IC600WD010 (3m), IC600WD025 (7.5m), and IC600WD050 (15m) cables are all compatible. Additionally, pre-terminated cables like the IC697CBL811 (3m) and IC697CBL826 (7.5m) are available, which include built-in terminating resistors for added convenience.

Status Indicators and Controls

The front panel of the IC697RCM711 features five LED indicators: OK, Local Ready, Local Active, Remote Ready, and Remote Active. These lights provide real-time feedback on the module's operational status, communication health, and the active role (primary or backup) of the local CPU.

Moreover, a physical pushbutton is mounted on the module. Pressing this button forces a manual switchover, transferring control from the active unit to the standby unit. This function proves especially useful during system testing, maintenance, or when operators need to manually balance system loads.

System Integration and Installation

Installing the IC697RCM711 is straightforward. Simply insert the module into an available slot in the Series 90-70 VME backplane. Then, connect the companion IC697BEM713 Bus Transmitter Module and use the appropriate cable to link the two RCM units across the redundant CPU racks.

For optimal performance, ensure the total cable length does not exceed 15 meters. Also, remember to install the IC697ACC702 terminating plug at the end of the bus chain to prevent signal reflections. The module supports both local and remote mounting configurations, offering flexibility for system designers.

Environmental and Mechanical Parameters

• Operating temperature: 0°C to 60°C

• Storage temperature: –40°C to 85°C

• Relative humidity: 5% to 95% (non-condensing)

• Vibration resistance: 0.5 G (10–150 Hz)

• Shock resistance: 15 G (11 ms)

These specifications make the IC697RCM711 suitable for industrial environments, including factory floors, power plants, and process automation facilities.

Packaging List

• 1 × IC697RCM711 Redundancy Communication Module

• 1 × User manual (quick start guide)

• 2 × Mounting screws for backplane installation

• 1 × Anti-static packaging bag

All items are carefully packed to prevent damage during transit.

Shipping Information

All orders are shipped via FedEx, UPS, or DHL with tracking numbers provided. Standard delivery takes 3–7 business days depending on the destination. Express shipping options are also available upon request.

Frequently Asked Questions (FAQ)

1. Is the IC697RCM711 still supported by Emerson Automation?
No, this module has been officially discontinued. However, we stock tested, fully functional units that meet original performance specifications. Support is available through third-party providers.

2. Can I use the IC697RCM711 with other CPU models?
Compatibility is limited to IC697CPU780, IC697CGR772, and IC697CGR735. Other CPUs in the Series 90-70 line may not support redundancy features required by this module.

3. What happens if the cable exceeds 15 meters?
Signal degradation increases beyond 15 meters, potentially causing synchronization errors. Always keep the cable length within the specified limit.

4. Do I need both the Bus Transmitter and Terminating Plug?
Yes. The IC697BEM713 transmitter is required for signal driving, and the IC697ACC702 plug is essential for proper bus termination. Both components are necessary for reliable operation.

5. How do I perform a manual switchover?
Simply press the pushbutton on the front panel of the IC697RCM711. The system will then transfer control from the active CPU to the standby CPU without disturbing the connected processes.