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The Allen-Bradley 1756-L1M1 is a ControlLogix 5550 controller processor designed to provide high-performance process control and communication capabilities within the Logix platform. As part of the ControlLogix system, this controller mounts directly into any slot of a 1756 ControlLogix chassis and operates independently or as part of a multi-controller architecture. It provides reliable execution of user control programs, motion control, and data handling across demanding industrial automation environments.
This controller features onboard memory for user logic and data storage, supporting seamless integration with RSLogix 5000 programming software. It requires a 1756-BA1 replaceable lithium battery for RAM backup and utilizes standard communication cabling, such as the 1756-CP3 serial cable, for direct controller access and configuration.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Line | ControlLogix 5550 |
| Catalog Number | 1756-L1M1 |
| Enclosure Type | Open-style |
| Backplane Current Draw (5V DC) | 120 mA |
| Backplane Current Draw (24V DC) | 2 mA |
| Power Dissipation | 4.1 W max. at 60 Celsius |
| Isolation Voltage | 30V (continuous), basic insulation type (communication ports to backplane) |
| Operating Temperature | 0 to 60 Celsius (32 to 140 Fahrenheit) |
| Memory / Battery Backup | 1756-BA1 lithium battery module |
| Communication Port | RS-232 serial communication port (compatible with 1756-CP3 cable) |
| Country of Origin | United States |
The 1756-L1M1 controller features a front-facing RS-232 communication port used primarily for controller configuration, troubleshooting, and serial communication. System power and chassis communication are established directly through the module's connection to the 1756 ControlLogix backplane when inserted into any available slot.
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Returns & Warranty

The Allen-Bradley 1756-L1M1 is a ControlLogix 5550 controller processor designed to provide high-performance process control and communication capabilities within the Logix platform. As part of the ControlLogix system, this controller mounts directly into any slot of a 1756 ControlLogix chassis and operates independently or as part of a multi-controller architecture. It provides reliable execution of user control programs, motion control, and data handling across demanding industrial automation environments.
This controller features onboard memory for user logic and data storage, supporting seamless integration with RSLogix 5000 programming software. It requires a 1756-BA1 replaceable lithium battery for RAM backup and utilizes standard communication cabling, such as the 1756-CP3 serial cable, for direct controller access and configuration.
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Line | ControlLogix 5550 |
| Catalog Number | 1756-L1M1 |
| Enclosure Type | Open-style |
| Backplane Current Draw (5V DC) | 120 mA |
| Backplane Current Draw (24V DC) | 2 mA |
| Power Dissipation | 4.1 W max. at 60 Celsius |
| Isolation Voltage | 30V (continuous), basic insulation type (communication ports to backplane) |
| Operating Temperature | 0 to 60 Celsius (32 to 140 Fahrenheit) |
| Memory / Battery Backup | 1756-BA1 lithium battery module |
| Communication Port | RS-232 serial communication port (compatible with 1756-CP3 cable) |
| Country of Origin | United States |
The 1756-L1M1 controller features a front-facing RS-232 communication port used primarily for controller configuration, troubleshooting, and serial communication. System power and chassis communication are established directly through the module's connection to the 1756 ControlLogix backplane when inserted into any available slot.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|