The Honeywell 2MLB-M12A-CC is a robust Main CPU Base with 12 slots, designed for use in Modular Automation Platforms within Honeywell’s MasterLogic-200 (ML200) PLC series. As a critical component of the ML200 PLC architecture, this base unit serves as the central backbone for hosting CPU modules, power supplies, and I/O modules in a scalable and integrated automation environment.

Designed for high-speed, real-time control systems, the 2MLB-M12A-CC offers a flexible foundation for complex industrial automation applications. Its 12-slot configuration allows for efficient expansion of I/O and intelligent modules while maintaining the stability and performance Honeywell systems are known for.

Built to meet demanding industrial standards, this backplane base unit ensures excellent communication between all attached modules through a high-speed internal bus system, making it an ideal choice for advanced and distributed automation tasks.

Technical Specifications

Product Applications

The 2MLB-M12A-CC Main CPU Base is integral to various industries where automation, modularity, and scalability are critical:

• Factory Automation – Provides central control infrastructure for assembly lines and robotic systems.

• Power Plants – Manages distributed I/O and process interlocks for turbines, generators, and substation systems.

• Oil & Gas – Deployed in drilling rigs and refineries for centralized process control and monitoring.

• Pharmaceutical Manufacturing – Controls automated packaging, filling, and environmental systems.

• Water and Wastewater – Serves as the CPU base for pump stations, treatment plants, and distribution systems.

• Building Management Systems (BMS) – Integrates HVAC, lighting, and access control for intelligent buildings.

Its 12-slot capacity enables seamless customization for both small-scale and large-scale automation architectures.

Product Advantages

• Modular Flexibility: With 12 slots, users can design custom control configurations without system redesign.

• High Reliability: Built to Honeywell’s industrial standards, ensuring dependable long-term operation in harsh environments.

• Fast Bus Communication: Internal serial backplane ensures low-latency data exchange among connected modules.

• Space-Efficient Design: Compact form factor for control cabinets with high I/O density requirements.

• Scalable Architecture: Ideal for both compact and large control systems, supporting future system expansion.

• Global Certifications: CE, UL, KC approvals ensure compliance with international standards.

• Tool-Free Maintenance: Hot-swappable modules (with certain limitations) reduce downtime and simplify upgrades.

• Seamless Integration: Compatible with Honeywell Experion and other process control systems for unified architecture.

Frequently Asked Questions (FAQ)

1. What is the primary role of the 2MLB-M12A-CC unit?

   It serves as the main base unit for installing the CPU and other I/O and communication modules in a Honeywell ML200 PLC system.

2. How many modules can be installed in this base?

   A total of 12 modules, including one CPU module and 11 I/O or communication modules.

3. Does it come with a CPU module?

   No, the CPU must be purchased separately and installed in the designated CPU slot.

4. What types of modules are compatible with this base?

   It supports ML200 series CPUs, digital/analog I/O modules, and communication interfaces like Ethernet, RS-232, and RS-485.

5. Can I expand beyond 12 modules?

   No, the 2MLB-M12A-CC is limited to 12 slots. For larger systems, multiple bases can be used in conjunction with expansion interfaces.

6. What mounting options are available?

   It supports both DIN rail and panel mounting.

7. Is the backplane hot-swappable?

   Some modules can be hot-swapped with power off on the affected slot; however, it’s recommended to power down for safety.

8. What is the temperature range it can operate in?

   It operates between 0°C to 55°C.

9. Is the backplane communication isolated?

   Yes, internal communication between modules via the backplane is electrically isolated.

10. Can this unit be used in safety applications?

    Yes, when paired with safety-rated modules and certified systems, it can support safety-related control tasks.