Allen-Bradley 1756-L71/B ControlLogix 5571 Controller Module
$123.00
$320.00
Description
Allen-Bradley 1756-L71/B ControlLogix 5571 Controller Module
The Allen-Bradley 1756-L71/B, also cataloged as the 1756-L71 Controller Module, operates as a dedicated hardware component for executing programmable logic control, motion coordination, and data processing tasks within ControlLogix EtherNet/IP and industrial network platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-L71/B |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 0.4 kg |
| Dimensions | 2.5 cm x 14.7 cm x 14.2 cm |
| Operating Temp | 0-60 deg C |
| Power Consumption | Approximately 2.5 W |
| Product Type | Controller Module |
| Product Family | ControlLogix |
| Controller Series | Logix 5571 |
| User Memory | 2 MB |
| Nonvolatile Memory | SD card (1 GB standard, expandable) |
| Communication Ports | USB programming port, RS-232 serial port |
| Supported Networks | EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, SynchLink |
| Maximum Digital I/O | 128,000 points |
| Maximum Analog I/O | 4,000 points |
| Tasks Supported | 32 tasks |
| Programs Per Task | 100 programs |
| Programming Languages | Ladder Logic, Structured Text, Function Block Diagram, Sequential Function Chart |
| Motion Support | Integrated motion via EtherNet/IP and SERCOS interface |
| Storage Temperature | -40 to 85 deg C |
| Relative Humidity | 5-95% non-condensing |
| Certifications | CE, UL, CSA, KC, C-Tick, IEC compliance |
Firmware Flash Compatibility and ControlLogix Communication Architecture
The 1756-L71/B controller operates on the ControlLogix 5571 platform and supports deterministic EtherNet/IP communication with additional compatibility for ControlNet, DeviceNet, DH+, Remote I/O, and SynchLink networks. The controller provides I/O density scaling through support for up to 128,000 digital I/O points and 4,000 analog I/O points.
Firmware flash compatibility must be verified between controller revision, chassis modules, communication interfaces, and application software before configuration changes. The controller supports SD card-based nonvolatile storage for project retention and maintenance operations.
Frequently Asked Questions
Q: What memory capacity is available in the 1756-L71/B controller?
A: The controller provides 2 MB user memory with SD card support for nonvolatile application storage.
Q: Which programming and communication interfaces are available on the 1756-L71/B?
A: The controller provides a USB programming port, RS-232 serial port, and supports EtherNet/IP, ControlNet, DeviceNet, DH+, Remote I/O, and SynchLink networks.
Q: What is the supported operating temperature range of the 1756-L71/B?
A: The controller operates within a temperature range of 0 to 60 deg C.
Field Installation Guidelines
Install the 1756-L71/B in a compatible ControlLogix chassis with sufficient backplane power capacity. Confirm chassis grounding, module seating, and power supply loading before applying system voltage.
Route communication cables separately from high-voltage conductors to reduce electrical interference. Apply proper shielding and grounding methods for serial and network connections according to the selected communication protocol requirements.
Before commissioning, verify firmware revision compatibility, SD card configuration, controller memory availability, and application project settings. Migration evaluation may consider newer ControlLogix 5580 series controllers when increased processing capacity or updated communication functions are required.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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