Technical Specifications

• Brand: RELIANCE (Reliance Electric / Rockwell Automation)

• Part Number: 0-58820 (alternate: 058820, O-58820-B)

• Type: MultiBus ControlNet Module (MBCN)

• Series: AutoMax PLC (Multibus rack system)

• Communication Protocol: ControlNet (v1.5)

• Data Capacity: Max 16 KB total input/output data

• Connections: Supports 127 scheduled connections (480 words each)

• Form Factor: Rack-mount PCB for AutoMax Multibus chassis

• Indicators: LED status lights (PWR, RUN, FAULT, COM)

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -40°C to +85°C

• Power Supply: +5 VDC from backplane

• Compatibility: AutoMax PLC systems, ControlNet-compliant devices

• Certification: CE, UL

Core Functions

• Act as a ControlNet scanner/adapter for AutoMax PLC, managing network communication.

• Enable deterministic, high-speed data exchange (I/O, messages) between controllers and field devices.

• Support scheduled and unscheduled communication for real-time control and diagnostics.

• Facilitate system integration with FlexPak 3000 drives, PLCs, HMIs, and I/O modules.

• Provide network diagnostics (fault logging, status monitoring) via LED indicators and software.

• Ensure data integrity with error checking and redundancy support.

Application Scenarios

• AutoMax PLC-based automation systems requiring ControlNet connectivity.

• FlexPak 3000 DC drive integration in metallurgy, mining, paper, and steel industries.

• High-speed motion control applications (conveyors, winders, extruders).

• Distributed control systems (DCS) with multi-device coordination.

• Legacy system upgrades migrating from older protocols to ControlNet.