I/O modules

Product Overview and Core Functionality

The GE IC695NIU001 functions as an Ethernet Network Interface Unit for the PACSystems RX3i platform. Emerson Automation now manufactures this module, continuing the legacy of GE Intelligent Platforms. It enables seamless communication between an RX3i controller and remote Series 90-30 I/O racks.

This module supports dual backplane buses within a single slot. It accommodates both the high-speed RX3i PCI bus and the legacy Series 90-30 serial bus simultaneously. Therefore, the GE IC695NIU001 offers exceptional flexibility for integrating new and existing I/O modules.

The unit requires the IC695ETM001 Ethernet Interface Module for network connectivity. This modular approach allows customized configurations based on your specific application requirements.

Communication Ports and Protocol Support

The GE IC695NIU001 features two integrated serial communication ports for versatile connectivity. These ports support both RS-232 and RS-485 physical interface standards. You can connect legacy devices and modern instrumentation directly to this unit.

These serial ports support multiple industrial protocols for maximum compatibility. The unit supports SNP, Modbus RTU Slave, and Serial I/O protocols. It also functions as a Modbus RTU Master through a dedicated application “C” block.

Memory and Processing Capabilities

The GE IC695NIU001 includes 10 MB of integrated flash memory for firmware and configuration storage. This ensures reliable retention of network settings and operational parameters. You can easily restore configurations after power cycles or module replacements.

Firmware upgradability represents a key feature of this network interface unit. You can update the firmware in the field to support new features. This extends the useful life of the GE IC695NIU001 and protects your investment.

The module includes floating point processing support for complex data handling tasks. This allows efficient processing of analog values and mathematical computations.

Physical and Electrical Specifications

The GE IC695NIU001 occupies a single slot in a PACSystems RX3i rack. It weighs approximately 1.00 lbs (0.45 kg), making it easy to handle during installation. The operating temperature range spans 0°C to 60°C for reliable industrial performance.

The module draws power directly from the rack backplane, simplifying installation. It requires +3.3 VDC at 1.25 Amps and +5 VDC at 1.0 Amps nominally. Internal power consumption measures 0.52 A at 3.3 V and 0.95 A at 5 V.

Battery Backup Options

For data retention during power outages, the GE IC695NIU001 supports external battery backup. GE recommends the RX3i CPU Lithium Smart Battery (IC695ACC302) for optimal performance. You can also use the Series 90-30 Lithium Battery Pack (IC693ACC302) or IC698ACC701 Smart Coin Cell Battery Pack.

Technical Specifications Summary

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