PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1756-L71 is a ControlLogix controller designed for industrial automation tasks. This unit provides 2 MB of user memory and 0.98 MB of dedicated I/O memory. It can execute up to 32 independent controller tasks to handle complex processing requirements. The module supports a maximum of 500 controller connections across integrated industrial architectures.
Communication options include EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, and SynchLink networks. An integrated USB 2.0 port supports programming, firmware updates, and local device interrogation. The controller operates with an open-style enclosure within an ambient range of 0 to 60 degrees Celsius. Power consumption requires 5 milliamps at 1.2 volts DC and 800 milliamps at 5.1 volts DC.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| UPC | 612598876013 |
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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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| Communications Ports | 1 USB 2.0 Port |
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| Communication Options | Ethernet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, and Other Third-Party Networks |
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| Maximum Number of Controller Connections Supported | 500 |
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| Input and Current Ratings | 5 Milliamps at 1.2 Volts DC; 800 Milliamps at 5.1 Volts DC |
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| Power Dissipation Rating | 2.5 Watts |
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| Thermal Dissipation Rating | 8.5 BTU/hr |
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| Isolation Voltage | 30 Volts (Continuous) |
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| Enclosure Type | Open-Style |
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| Operating Temperature Range | 0 to 60 Degrees Celsius |
|---|
TECHNICAL INFORMATION
Features
- Provides 2 MB user memory and 0.98 MB I/O memory.
- Executes up to 32 configurable controller tasks.
- Supports up to 500 controller connections.
- Features an onboard full-speed USB 2.0 port for programming.
- Communicates across EtherNet/IP, ControlNet, DeviceNet, and SynchLink networks.
TECHNICAL INFORMATION
Connections / Interfaces
- Includes one integrated USB 2.0 port for local configuration.
- Supports EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, and Remote I/O via chassis communication modules.
- Integrates with SynchLink networks for high-speed synchronized communication.
TECHNICAL INFORMATION
Installation Guidelines
- Install the unit into any available slot of a 1756 ControlLogix chassis.
- Maintain an ambient operating temperature between 0 and 60 degrees Celsius.
- Ensure sufficient airflow around the open-style enclosure to support cooling.
TECHNICAL INFORMATION
Compatibility
- Operates in standard 1756 ControlLogix chassis architectures.
- Interfaces with ControlLogix communication bridges including EtherNet/IP and ControlNet.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSOperates in standard 1756 ControlLogix chassis architectures. Interfaces with ControlLogix communication bridges including EtherNet/IP and ControlNet.
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 user memory does the 1756-L71 controller provide?
The 1756-L71 provides 2 MB of user memory alongside 0.98 MB of dedicated I/O memory.
What is the maximum number of connections supported by the 1756-L71?
The 1756-L71 controller supports up to 500 logical connections for network devices.
What communication ports are built directly onto the 1756-L71?
The controller includes one built-in USB 2.0 port for local programming and diagnostics.
What are the power dissipation and thermal ratings for this controller?
The module has a power dissipation rating of 2.5 watts and dissipates 8.5 BTU per hour.
