The 2MLI-CPUH is the high-performance CPU module at the heart of the Honeywell MasterLogic-200 programmable logic controller series. This controller handles complex automation tasks with a large program memory and extensive I/O capacity. Specifically, it targets process control, factory automation, and infrastructure applications that demand fast scan times and flexible programming.
System integrators select the 2MLI-CPUH when standard CPUs cannot meet memory or speed requirements. Moreover, the module supports all three IEC 61131-3 programming languages, giving engineers the freedom to choose the best development approach. Consequently, teams can standardize on ladder logic, sequential function charts, or structured text without switching hardware platforms.
The CPU runs a reiterative operating system with fixed cycle and constant scan modes. I/O control uses a scan-synchronous batch processing system with refresh, plus a direct system by command for time-critical signals. Besides, the instruction set covers 136 basic functions plus real number operations, supported by 43 basic function blocks and dedicated communication function blocks.
Core performance parameters include:
Program Memory: 3.5 MB
Installable I/O Points: 6,144 points
Max I/O Memory Contacts: 131,072 points
Basic Instruction Speed: 0.028 µs/step
MOVE Instruction Speed: 0.084 µs/step
Operating Temperature: 0 to 55 °C
Memory organization provides generous space for complex programs. The symbolic variable area offers 512 KB with up to 256 KB retain settable. Meanwhile, the direct variable area (M) provides 256 KB with up to 128 KB retain settable. Input (I) and output (Q) variables each receive 16 KB. Therefore, engineers can build large, maintainable programs with clear variable naming.
The 2MLI-CPUH supports Ladder Diagram, SFC, and Structured Text programming. Furthermore, the 43 basic function blocks cover common control tasks such as PID, math, and comparison operations. Dedicated function blocks extend support to special function modules and P2P communication, simplifying integration with remote devices.
Eighteen operators provide flexible expression building within programs. Additionally, the symbolic variable system lets programmers define meaningful tag names instead of raw addresses. This approach reduces commissioning errors and speeds up troubleshooting during maintenance.
The module installs as a plug-in unit within the MasterLogic-200 rack. Its compact form factor keeps cabinet space efficient while maintaining full backplane connectivity. The rated operating temperature spans 0 to 55 °C, which suits most industrial control rooms and enclosed panels.
Heat generation stays within normal PLC cabinet limits, so standard forced-air or passive ventilation works well. Moreover, the module communicates with I/O and special function cards through the backplane, eliminating extra wiring between rack slots.
First, power down the MasterLogic-200 rack and confirm zero voltage on the backplane. Next, insert the 2MLI-CPUH into the designated CPU slot and press firmly until the connector seats. Then, tighten the retaining screws to secure the module against vibration.
After mounting, connect the programming cable and open the configuration software. Specifically, set the scan mode, memory allocation, and retain areas before downloading the program. Finally, run a test scan and verify I/O response with the built-in diagnostics before placing the system into service.
1x Honeywell 2MLI-CPUH CPU Module
1x Anti-static protective bag
1x Individual cardboard box with shock-absorbing foam
Q1: How much program memory does the 2MLI-CPUH provide?
A1: The 2MLI-CPUH offers 3.5 MB of program memory, which supports large ladder, SFC, and structured text programs for complex control tasks.
Q2: What is the maximum I/O capacity of this CPU?
A2: It supports up to 6,144 installable I/O points and 131,072 I/O memory contacts, giving ample room for medium to large automation systems.
Q3: Which programming languages does this module support?
A3: It supports Ladder Diagram, Sequential Function Chart (SFC), and Structured Text (ST), fully aligned with IEC 61131-3 standards.
Q4: What is the operating temperature range?
A4: The module operates from 0 to 55 °C, suitable for standard industrial control cabinets and process rooms.
Q5: How do you ship this product?
A5: We ship via Fedex, UPS, and DHL. Each unit travels in anti-static packaging inside a shock-absorbing box for safe delivery.
| Brand Name | |
| Model No. | 2MLI-CPUH |
| Product Type | CPU Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
