Emerson 396879-11-0 ControlWave Micro CPU Module for Remote Automation

The 396879-11-0 CPU module runs control logic inside the ControlWave Micro RTU platform. Emerson engineers this module for remote automation at wellheads, pipeline stations, and small process skids. It executes ladder logic and function block programs while managing I/O and communication tasks.

Processor and Memory Specifications

The module pairs a 32-bit processor with 8 MB of flash memory for application storage. It holds 4 MB of SRAM for runtime data and program execution. Two serial ports support RS-232 and RS-485 communication at speeds up to 115.2 kbps. Additionally, an Ethernet port handles TCP/IP traffic to SCADA hosts and engineering tools.

Physical Dimensions and Power Details

The module measures 130 mm in length, 90 mm in width, and 40 mm in depth. It weighs approximately 0.4 kg, and it seats directly on the ControlWave Micro backplane. A 12–24 VDC input powers the module at a maximum draw of 0.5 A. A backup battery sustains the real-time clock during power outages.

Installation and Configuration Notes

Technicians seat the 396879-11-0 on the backplane and secure the mounting screw at the front edge. Engineers download application programs through the Ethernet port or a serial connection. The module scans I/O and updates outputs within a fixed cycle time. Consequently, remote stations keep running through communication outages with local control intact.

Why This Module Fits Remote RTU Applications

Operators choose the 396879-11-0 for its compact footprint and low power draw. The 8 MB flash memory holds substantial control programs without external storage. Dual serial ports connect to radios, flow computers, and legacy devices. This CPU module serves oil and gas gathering, water districts, and pipeline compressor stations.