IC697CMM741 GE 90-70 PLC Ethernet Interface 15-Pin AUI

Product Overview

The GE Fanuc IC697CMM741 serves as a high-performance Communications Coprocessor Module specifically designed for the Series 90-70 PLC platform. It facilitates seamless, high-speed data exchange between the PLC backplane and external industrial networks, supporting plant-wide integration and supervisory control (SCADA). Equipped with a dedicated 32-bit Intel 80386 processor, this module offloads communication tasks from the main CPU to ensure deterministic logic execution. We supply this unit as 100% Brand New original hardware, featuring a standard 15-pin AUI port for direct Ethernet attachment in demanding manufacturing and utility environments.

Technical Specifications

The IC697CMM741 integrates robust processing power with flexible networking standards:

• Model Number: IC697CMM741

• Module Type: Communications Coprocessor

• Processor: Intel 80386 (32-bit)

• Clock Speed: 20 MHz

• Onboard Memory: 2 MB RAM / 1 MB Flash EPROM

• Communication Interface: Ethernet (via 15-pin AUI port)

• Serial Interfaces: RS-232 / RS-485

• Supported Protocols: TCP/IP, SRTP, Modbus TCP/IP (via SRTP), SNP, SNPX

• Data Transfer Rate: 10 Mbps (Ethernet)

• Power Requirements: 5 VDC from backplane (~1.2 Amps)

• Status Indicators: 3 Green LEDs (Module OK, LAN Online, Serial Active)

• Operating Temperature: 0°C to +60°C (32°F to 140°F)

• Weight: 1.23 lbs (0.56 kg)

Engineering Advantages

The IC697CMM741 provides technical solutions for optimizing plant-level connectivity and data integrity:

• Dedicated Processing Architecture: The onboard 20 MHz 80386 CPU manages all protocol encapsulation and network handshaking. This dedicated architecture prevents communication "bursts" from increasing the PLC's main logic scan time, ensuring critical process safety interlocks remain stable during heavy network traffic.

• Versatile Protocol Support: The module supports the Service Request Transfer Protocol (SRTP) and TCP/IP, enabling direct communication with host computers and other Series 90-70 or 90-30 PLCs. This flexibility allows for easy integration into existing Modbus or SNP-based legacy networks while providing a path to modern Ethernet standards.

• Simplified Direct Attachment: The single-slot design utilizes a standard 15-pin AUI (Attachment Unit Interface) port. This allows engineers to use various external transceivers to connect the PLC to 10Base-T (RJ45), 10Base-2 (Coax), or 10Base-FL (Fiber Optic) media, adapting to the specific EMI/RFI requirements of the facility.

• Proactive Network Diagnostics: Three dedicated front-panel LEDs provide immediate visual confirmation of module health and network activity. Internal watchdog timers and fault tables automatically record communication errors, allowing maintenance teams to differentiate between cable faults and protocol timeouts without specialized network analyzers.

FAQs

Q: Does the IC697CMM741 require an external transceiver?A: Yes. The module features a 15-pin AUI port. To connect to a standard RJ45 Ethernet network, you must use a compatible AUI-to-10Base-T transceiver (MAU). This modular approach allows you to choose the media type (Copper or Fiber) that best suits your industrial environment.

Q: Can I use this module to communicate with third-party Modbus devices?A: Absolutely. The IC697CMM741 supports Modbus protocols, allowing it to act as a bridge between GE Fanuc Series 90-70 systems and third-party devices such as drives, power meters, or other PLCs that utilize Modbus communication standards.

Q: Is the 2 MB RAM sufficient for high-volume data acquisition?A: The 2 MB of RAM provides a massive buffer for communication packets. This prevents data loss during peak network congestion and allows the coprocessor to manage multiple simultaneous SRTP connections without impacting data throughput.

Q: Does this module support "Hot Insertion" into the Series 90-70 rack?A: While the Series 90-70 rack is physically robust, we recommend powering down the rack before installing or removing the IC697CMM741 to ensure the 32-bit backplane bus synchronizes correctly with the Intel 80386 coprocessor upon startup.