PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1756-L75 is a ControlLogix controller designed for industrial automation environments. This unit includes 32 MB of user memory for logic execution. It also provides 0.98 MB of dedicated memory for I/O operations. The controller handles demanding data processing tasks across distributed automation architecture. It supports up to 128,000 digital I/O points and 4,000 analog I/O points.
Networking and architecture integration are facilitated through an integrated USB port alongside network support. The controller accommodates Ethernet, ControlNet, and DeviceNet communication protocols. It supports up to 500 simultaneous controller connections. Full controller redundancy is supported to maintain high system availability. The operating architecture runs up to 32 simultaneous tasks with 100 programs per task.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| UPC | 612598876051 |
|---|
| Weight | 1.00 lbs (0.45 kg) |
|---|
| Maximum Number of Tasks | 32 Tasks |
|---|
| Maximum Programs per Task | 100 Programs per Task |
|---|
| Event Task Options | All event triggers |
|---|
| Built-In USB Port | 1 USB Port |
|---|
| Ethernet Communication | Supported |
|---|
| Maximum Number of Controller Connections | 500 Connections |
|---|
| ControlNet Communication Options | Supported |
|---|
| Controller Redundancy Option | Full Support |
|---|
| DeviceNet Communication | Supported |
|---|
| User Memory | 32 MB |
|---|
| I/O Memory | 0.98 MB |
|---|
| Maximum Digital I/O | 128,000 I/O |
|---|
| Maximum Analog I/O | 4000 I/O |
|---|
TECHNICAL INFORMATION
Features
- Features 32 MB of user data memory and 0.98 MB of dedicated I/O memory.
- Supports up to 32 concurrent tasks with 100 programs allowed per task.
- Provides execution compatibility across all event triggers for event tasks.
- Maintains up to 500 simultaneous communication connections across automation networks.
- Includes an onboard USB port for direct controller programming and diagnostics.
- Offers complete controller redundancy capability for critical operations.
- Scales up to 128,000 digital I/O points and 4,000 analog I/O points.
TECHNICAL INFORMATION
Applications
- High-capacity industrial manufacturing systems requiring extensive digital and analog I/O control.
- Critical process facilities that implement dual-controller redundancy to prevent downtime.
- Plant-wide automation systems integrating Ethernet, ControlNet, and DeviceNet communication architectures.
TECHNICAL INFORMATION
Connections / Interfaces
- One built-in USB port for local programming, firmware maintenance, and diagnostics.
- Supports connection to Ethernet, ControlNet, and DeviceNet communication modules.
- Maintains up to 500 simultaneous controller communication connections.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module into any available slot of a 1756 ControlLogix chassis.
- Ensure enclosure cooling maintains ambient temperatures within operating specifications.
- Ground the ControlLogix chassis properly before operating the system.
TECHNICAL INFORMATION
Configuration Guidelines
- Allocate user program routines within the 32 MB user memory allocation.
- Configure controller tasks up to the maximum limit of 32 concurrent tasks.
- Assign up to 100 programs per task based on application sequencing needs.
- Enable controller redundancy features when using dual-controller high-availability architecture.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley ControlLogix 1756 chassis backplanes.
- Integrates with ControlLogix communication interface modules for Ethernet, ControlNet, and DeviceNet.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley ControlLogix 1756 chassis backplanes. Integrates with ControlLogix communication interface modules for Ethernet, ControlNet, and DeviceNet.
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 is available on the Allen-Bradley 1756-L75?
The 1756-L75 provides 32 MB of user memory along with 0.98 MB of dedicated I/O memory.
Does the 1756-L75 controller support redundancy?
Yes. The 1756-L75 provides full support for controller redundancy in high-availability applications.
How many tasks and programs can the 1756-L75 execute?
The controller executes up to 32 tasks concurrently, with up to 100 programs allowed per task.
What communication interfaces are supported by the 1756-L75?
The unit features a built-in USB port and supports Ethernet, ControlNet, and DeviceNet networks via communication modules.
