Honeywell 2MLI-CPUH MasterLogic-200 PLC, 6,144 I/O Points, 3.5MB Memory

Product Overview

When your control system demands high I/O capacity and fast program execution, the Honeywell 2MLI-CPUH delivers. As part of the MasterLogic-200 series, this programmable logic controller supports up to 6,144 I/O points and 3.5MB of program memory. It runs IEC-standard languages including Ladder Diagram, SFC, and Structured Text, making it a versatile choice for complex automation tasks. With a robust operating temperature range of 0-55 degrees C, it suits demanding industrial environments.

Technical Specifications Breakdown

The 2MLI-CPUH offers 512KB of symbolic variable area (with up to 256KB retain settable) and 256KB of direct variable memory (up to 128KB retain settable). Its I/O memory contact capacity reaches 131,072 points. Basic instruction execution time is 0.028 μs per step, while MOVE operations complete in 0.084 μs per step. The controller uses a scan synchronous batch processing system with direct system command capability. It supports 18 operators, 136 basic functions plus real number operations, 43 basic function blocks, and dedicated function blocks for special modules and P2P communication.

Industry Applications

In manufacturing lines requiring high point counts, the 2MLI-CPUH handles up to 6,144 I/O points efficiently. Its 3.5MB program memory accommodates large, complex control programs. For process control applications, the IEC-compliant programming environment reduces development time and improves code portability. The constant scan and fixed cycle operation modes ensure predictable timing for critical processes.

Installation & Setup Guidance

Mount the 2MLI-CPUH in a clean, dry cabinet within the 0-55 degrees C operating range. Ensure proper airflow around the unit. Use the direct variable memory (M: 256KB) for efficient data handling. Configure the I/O control system as scan synchronous batch processing or direct system by command, depending on your application needs. Verify that the total I/O points do not exceed 6,144 and program memory stays within the 3.5MB limit.

Maintenance & Reliability

Regularly inspect the 2MLI-CPUH for dust accumulation and ensure ambient temperature stays within 0-55 degrees C. Check that the retain settings for symbolic variable area (max 256KB) and direct variable memory (max 128KB) are correctly configured to preserve critical data during power cycles. The reiterative operation system enhances reliability by continuously verifying program integrity. Periodic review of I/O memory contact usage (up to 131,072 points) helps prevent addressing conflicts.

Compatibility & Integration

The 2MLI-CPUH integrates seamlessly with other MasterLogic-200 series modules. It supports dedicated function blocks for special function modules and P2P communication. The IEC programming languages (Ladder Diagram, SFC, ST) ensure compatibility with standard development tools. For variable management, use the I variable (16KB) and O variable (16KB) areas for structured data exchange.

Buying Guide

Before purchasing the 2MLI-CPUH, verify your system requires the MasterLogic-200 series form factor and that the 6,144 I/O point capacity meets your needs. Confirm program memory requirements fit within 3.5MB. Contact BluePLC Industrial for current availability and lifecycle status. Our team can help confirm compatibility with your existing Honeywell infrastructure.