Introduction
The GE IC695NIU001 is a PACSystems RX3i Ethernet Network Interface Unit (NIU) designed by Emerson Automation, formerly GE Intelligent Platforms. This single-slot module enables seamless communication between RX3i CPUs and legacy Series 90-30 I/O modules over an Ethernet network. Engineers will appreciate its dual backplane support, built-in 10 MB flash memory, and flexible serial protocols.
Key Specifications and Features
The IC695NIU001 supports two communication ports configurable for RS232 or RS485. It runs on serial protocols including Modbus RTU Slave, SNP, Serial I/O, and Modbus RTU Master (via application C block). The module integrates 10 MB flash memory for user data storage and 20 KB optional local logic. Its battery-backed real-time clock uses the RX3i CPU Lithium Smart Battery (IC695ACC302) or compatible alternatives.
Communication and Connectivity
Engineers can configure the GE IC695NIU001 using Machine Edition Logic Developer software version 5.51 or later. The module’s Ethernet interface relies on an RX3i Ethernet Interface Module (IC695ETM001) installed on the backplane. It supports Ethernet Global Data (EGD) exchange and SRTP communication services. The dual backplane bus supports both RX3i PCI and 90-30-style serial backplanes, simplifying integration into existing systems.
Power and Environmental Considerations
The module draws 1.25 Amps at +3.3 VDC and 1.0 Amps at +5 VDC nominal. It operates within a temperature range of 0°C to 60°C (32°F to 140°F). The design is electrically compliant with PCI 2.2 standard. For complete assemblies, consider ordering the NIU kit (IC695NTK001 or IC695NTK002) to ensure proper configuration.
Firmware and Flexibility
The pre-loaded firmware is upgradeable in-system, offering future-proofing for evolving automation needs. The module supports redundant controller configurations and floating point operations. Its comprehensive diagnostics tools and controller status data in every exchange enhance system reliability. All programming languages except C are supported for optional local logic.
Use Cases and Integration
Automation engineers commonly deploy the GE IC695NIU001 in remote I/O racks requiring Ethernet connectivity. With dual backplane support, it fits both new RX3i systems and upgrades from Series 90-30 installations. The module exchanges data automatically after configuration, reducing programming overhead. For procurement professionals, verifying compatibility with existing backplanes and power supplies is straightforward based on the provided specs.
In summary, the GE IC695NIU001 offers a robust, flexible solution for Ethernet-based NIU applications. Its combination of serial protocols, flash memory, and dual backplane support makes it a valuable component for PACSystems RX3i architectures.