PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1756-L72 is a ControlLogix Controller designed for industrial automation architectures. This unit provides 4 MB of user memory and 0.98 MB of dedicated I/O memory. The controller executes up to 32 independent tasks simultaneously. Each configured task can execute up to 100 individual control programs.
The module supports up to 128,000 total digital I/O points and 4,000 analog I/O points. It maintains up to 500 controller connections across connected system devices. Fully supported controller redundancy helps prevent operational interruptions during hardware faults. Available network communication options include Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink. The unit has an open enclosure rating and features 1 USB port.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| UPC | 612598876020 |
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| Weight | 1.00 lbs (0.45 kg) |
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| Controller Tasks | 32 Tasks Max. |
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| Programs per Task | 100 Programs per Task |
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| USB Ports | 1 Port |
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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 | Supported |
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| Remote I/O Communication | Supported |
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| SynchLink Communication | Supported |
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| Maximum Controller Connections | 500 Connections |
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| Controller Redundancy | Fully Supported |
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TECHNICAL INFORMATION
Features
- Allocates 4 MB of user memory and 0.98 MB of dedicated I/O memory.
- Executes up to 32 independent tasks with up to 100 programs per task.
- Handles up to 128,000 digital I/O and 4,000 analog I/O points.
- Provides full controller redundancy support for continuous system operation.
- Maintains up to 500 controller connections across automation networks.
- Supports Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink.
- Includes 1 integrated USB port for communication access.
- Operates with power dissipation rated at 2.5 Watts.
TECHNICAL INFORMATION
Connections / Interfaces
- One integrated USB port provides local programming and data access.
- Supports communication over Ethernet/IP, ControlNet, and DeviceNet protocols.
- Accommodates connections over Data Highway Plus, Remote I/O, and SynchLink.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module in an industrial enclosure suitable for open-style components.
- Verify the installation environment does not exceed the 30G operating shock rating.
- Ensure the system power supply delivers adequate current at 1.2V DC and 5.1V DC.
TECHNICAL INFORMATION
Configuration Guidelines
- Partition user memory within the specified 4 MB capacity limit.
- Configure up to 32 independent controller tasks.
- Assign a maximum of 100 control programs to each task.
- Limit total active device connections to 500 connections.
TECHNICAL RESOURCES
Documentation
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
What memory capacity does the 1756-L72 controller provide?
The 1756-L72 provides 4 MB of user memory. It also includes 0.98 MB of dedicated I/O memory.
How many tasks and programs can run on the 1756-L72?
The controller supports up to 32 independent tasks. Each task can contain up to 100 individual programs.
Does the Allen-Bradley 1756-L72 support redundancy?
Yes, the 1756-L72 provides full controller redundancy support. This maintains continuous system operation during hardware faults.
What networks can communicate with the 1756-L72 controller?
It supports Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink communications.
How many connections does the 1756-L72 controller support?
The 1756-L72 supports up to 500 controller connections across connected devices.
