Schneider 171CBU98090 Unity M1E Processor

The Schneider 171CBU98090 is a Unity M1E processor from the Modicon Momentum automation platform. It plays a central role in distributed control systems for industrial environments. With real-time processing, robust communication, and web-based diagnostics, it supports flexible and scalable automation applications. The processor uses a high-performance Spear 320s CPU and supports both IEC and LL984 programming standards. It integrates easily into Modbus and Ethernet networks.

Technical Specifications

Processor and Performance

• Processor Type: Spear 320s
• Clock Frequency: 333 MHz
• Word Length: 32-bit
• Execution Time: 83 ns per 1K instruction

Memory and I/O Capacity

• Program Memory: 3584 kB (IEC and LL984 formats)
• Register Words: 26,048
• I/O Capacity: 2048 inputs and 2048 outputs
• Supported Modbus Devices: Up to 32

Communication Interfaces

• RS232/RS485 Port: 1 × (Modbus, 19200 bps)
• Ethernet Port: 1 × (Modbus TCP, 10/100 Mbps)
• USB Port: 1 ×

Communication Services

• Modbus Messaging: 125 words
• I/O Messaging: 200 messages per second
• Global Data Exchange: 1600 messages per second

Web Services

• CPU status display
• Ethernet statistics
• Bandwidth monitoring

Mounting and Protection

• Mounting: 35 mm DIN rail
• Protection Rating: IP20

Environmental Ratings

• Operating Temperature: 0°C to 60°C (32°F to 140°F)
• Storage Temperature: –40°C to +85°C (–40°F to 185°F)
• Relative Humidity: 5% to 96% (non-condensing)
• Operating Altitude: Up to 2000 m
• Shock Resistance: 15 g for 11 ms

Physical Dimensions

• Width: 144 mm
• Depth: 53.47 mm
• Height: 60.6 mm
• Weight: 0.163 kg