PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1756-L73 is a ControlLogix controller designed for demanding industrial automation applications. It provides 8 MB of user memory alongside 0.98 MB of dedicated input and output memory. The unit supports up to 32 controller tasks. Each task can execute up to 100 independent user programs. It handles up to 128,000 total digital I/O points and 4,000 analog I/O points.
This controller supports up to 500 controller connections for distributed network architectures. Controller redundancy is fully supported to minimize unplanned system downtime. Integrated communication options include EtherNet/IP, ControlNet, and DeviceNet protocols. It also supports Data Highway Plus, Remote I/O, and SynchLink communication links. A single USB port provides local programming and diagnostic access.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| UPC | 612598876037 |
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| Weight | 1.00 lbs (0.45 kg) |
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| Number of Controller Tasks | 32 Tasks |
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| Number of Programs per Task | 100 Programs/Task |
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| USB Ports | 1 Port |
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| Maximum Controller Connections | 500 Connections |
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| Controller Redundancy | Supported |
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| Ethernet/IP Communication | Supported |
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| ControlNet Communication | Supported |
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| DeviceNet Communication | Supported |
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| Data Highway Plus Communication | Supported |
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| Remote I/O Communication | Supported |
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| SynchLink Communication | Supported |
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TECHNICAL INFORMATION
Features
- Configurable with up to 32 controller tasks and 100 programs per task.
- Provides 8 MB of user memory and 0.98 MB of I/O memory.
- Supports controller redundancy for high-availability system designs.
- Handles up to 500 simultaneous controller connections across control networks.
- Features a built-in USB port for programming, firmware updates, and diagnostics.
- Operates across EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, and SynchLink.
TECHNICAL INFORMATION
Applications
- Large-scale manufacturing execution and process control architectures.
- High-availability industrial systems requiring controller redundancy.
- Distributed I/O networks utilizing EtherNet/IP and ControlNet topologies.
TECHNICAL INFORMATION
Connections / Interfaces
- One integrated USB port for local device connection and maintenance.
- Chassis backplane interface for local and remote communication modules.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module directly into any available slot of a compatible ControlLogix chassis.
- Ensure total chassis backplane current requirements do not exceed power supply ratings.
- Maintain adequate ventilation spacing around the chassis to prevent thermal buildup.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure controller properties, tasks, and program allocation using compatible Rockwell Software.
- Establish controller connection limits within the maximum 500 connection threshold.
- Assign scheduled and periodic tasks according to specific application scan-time requirements.
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley ControlLogix 1756 series chassis and power supply units.
- EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, and SynchLink interface modules.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley ControlLogix 1756 series chassis and power supply units. EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, and SynchLink interface modules.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
How much memory does the Allen-Bradley 1756-L73 provide?
The 1756-L73 controller provides 8 MB of user memory and 0.98 MB of dedicated I/O memory.
How many tasks and programs does the 1756-L73 support?
The controller supports up to 32 tasks, with each task capable of handling 100 programs.
Does the 1756-L73 support controller redundancy?
Yes, the 1756-L73 controller supports redundancy to enhance system availability and reduce downtime.
