The Allen-Bradley 1756-L71 is a ControlLogix® 5570 series programmable automation controller (PAC) from Rockwell Automation. With 2 MB of user memory and 0.98 MB of I/O memory, it is designed for medium to large-scale industrial automation and process control applications.
Item No :
1756-L72Order(MOQ) :
1 PiecePayment :
EXWProduct Origin :
USAShipping Port :
WuhanLead Time :
3-5daysWeight :
5KG| Specification | Description |
|---|---|
| Manufacturer | Rockwell Automation (Allen-Bradley) |
| Model | 1756-L71 |
| Product Family | ControlLogix® 5570 / Logix5571 |
| Product Type | Programmable Automation Controller (PAC) |
| User Memory | 2 MB |
| I/O Memory | 0.98 MB |
| Max Digital I/O | 128,000 points |
| Max Analog I/O | 4,000 points |
| Maximum Connections | 500 |
| Tasks / Programs | 32 tasks, up to 100 programs per task |
| Built-in Port | 1 x USB 2.0 (programming/download) |
| Embedded Network Port | No (requires separate communication module, e.g., 1756-EN2T) |
| Non-Volatile Memory | Secure Digital (SD) card slot (1 GB included, upgradable to 2 GB) |
| Replacement Battery | 1756-ESMCAP (capacitor energy storage module, replaces traditional battery) |
| Display | 4-character alphanumeric display for diagnostics |
| Power Consumption | 2.5 W typical |
| Current Draw | 1.2V DC @ 5 mA; 5.1V DC @ 800 mA |
| Operating Temperature | 0°C to +60°C |
| Protection Class | IP20 (open-type, chassis mount) |
| Programming Software | Studio 5000 Logix Designer (RSLogix 5000 compatible) |
| Lifecycle Status | Active / Mature |
| Model | Description | Typical Application |
|---|---|---|
| 1756-L72 | ControlLogix 5572 controller with 4 MB user memory | Larger applications requiring more memory |
| 1756-L73 | ControlLogix 5573 controller with 8 MB user memory | Complex, data-intensive applications |
| 1756-L74 | ControlLogix 5574 controller with 16 MB user memory | High-end, large-scale systems |
| 1756-L75 | ControlLogix 5575 controller with 32 MB user memory | Maximum memory requirements |
| 1756-L71S | GuardLogix safety controller (2 MB standard + safety memory) | Applications requiring safety certification (SIL3) |
| 1756-EN2T | EtherNet/IP communication bridge module | Adding Ethernet network connectivity to the L71 |
| 1756-ESMCAP | Replacement energy storage module (capacitor-based) | Backup power for memory retention |
| 1756-A10 | 1794-IE8XT | 1769-IF4I |
| 1756-A13 | 1794-IF2XOF2I | 1769-IF4XOF2 |
| 1756-A17 | 1794-IF4I | 1756-OF4 |
| 1756-A4 | 1794-IF8IH | 1769-IG16 |
| 1756-A7 | 1794-IG16 | 1769-IM12 |
| 1756-BA1 | 1794-IH16 | 1769-IQ16 |
| 1756-BA2 | 1794-IJ2 | 1769-IQ16F |
| 1756-BATA | 1756-IF16 | 1769-IQ32 |
| 1756-BATM | 1794-IM8 | 1769-IQ32T |
| 1756-CFM | 1794-IP4 | 1769-IQ6XOW4 |
| 1756-CN2 | 1794-IR8 | 1756-L72 |
| 1756-CN2R | 1794-IRT8 | 1756-L55 |
| 1756-CNB | 1794-IRT8K | 1756-L61 |
Q1: Which ABB drive series is the 1756-L71 compatible with?
The 1756-L71 is a Rockwell Automation ControlLogix controller, not an ABB product. It is compatible with Allen-Bradley ControlLogix 1756 chassis and I/O modules, and can integrate with ABB drives via EtherNet/IP, ControlNet, or PROFIBUS communication modules.
Q2: What is the user memory capacity of the 1756-L71?
The 1756-L71 has 2 MB of user memory and 0.98 MB of I/O memory.
Q3: Does the 1756-L71 have built-in Ethernet ports?
No. Unlike newer L8x controllers, the L71 does not have an embedded Ethernet port. It requires a separate communication module such as a 1756-EN2T or 1756-EN3TR for network connectivity.
Q4: What is the replacement for the 1756-L61?
The direct upgrade/replacement for the older 1756-L61 controller is the 1756-L71. The L71 offers improved performance, USB programming port (vs. serial), higher connection counts (500 vs. 250), and SD card memory (vs. CompactFlash).
Q5: Is the 1756-L71 still active or has it been discontinued?
The 1756-L71 has an "Active Mature" lifecycle status, meaning it remains in production and is fully supported, while newer L8x controllers are available for new designs with advanced requirements.
The Allen-Bradley 1756-EN2TR is a dual-port EtherNet/IP communication module for the ControlLogix platform, designed to support Device Level Ring (DLR) topology for single-fault tolerant networks.
The Allen-Bradley 1756-PA75 is a ControlLogix AC power supply that mounts directly onto the left end of a 1756 chassis. It accepts a wide input voltage range of 85–265V AC and provides multiple DC output rails to power the chassis backplane and all installed modules, including processors, communication modules, and I/O cards.
The Allen-Bradley 1756-L73XT is an 8 MB ControlLogix-XT 5570 series controller from Rockwell Automation, specifically engineered for extreme industrial environments. The "XT" designation indicates conformal coating applied to the circuit board and an extended operating temperature range of -25°C to +70°C (-13°F to +158°F), enabling reliable operation in harsh conditions without climate-controlled enclosures.
The Allen-Bradley 1756-L71 is a ControlLogix® 5570 series programmable automation controller (PAC) from Rockwell Automation. With 2 MB of user memory and 0.98 MB of I/O memory, it is designed for medium to large-scale industrial automation and process control applications.
The Allen‑Bradley 1756‑L62 (also known as the ControlLogix 5562 processor) is a standard controller from Rockwell Automation's ControlLogix® 5570 family. Featuring 4 MB of user memory, it was designed for complex control of medium to large‑scale industrial processes in factory automation and process applications.
The Allen‑Bradley 1756‑DNB is a DeviceNet Bridge/Scanner Module for the ControlLogix® platform that interfaces between DeviceNet devices and the ControlLogix controller. It acts as a scanner on the DeviceNet network, collecting I/O data from up to 64 slave devices and mapping it into the controller's tag database.
The Allen‑Bradley 1756‑L61 is a ControlLogix® 5561 programmable automation controller from Rockwell Automation. It offers 2 MB of user memory and supports up to 128,000 digital I/O or 4,000 analog I/O points, making it suitable for medium‑scale automation and process control applications.
The Allen-Bradley 1756-L71 is a ControlLogix® 5570 series programmable automation controller (PAC) from Rockwell Automation. With 2 MB of user memory and 0.98 MB of I/O memory, it is designed for medium to large-scale industrial automation and process control applications.
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