1756-L71/L71S ControlLogix | 2MB Memory | Rockwell Automation

Allen-Bradley 1756-L71 & L71S ControlLogix Controllers | Premium Automation PACs with Safety & Redundancy

Technical Data

• Brand: Allen-Bradley/Rockwell Automation
• Models: 1756-L71 (Standard), 1756-L71S (Safety)
• User Memory: 2 MB
• I/O Memory: 0.98 MB
• Safety Memory (L71S): 1 MB
• Storage: 1GB SD card included (upgradable to 2GB)
• Max I/O Capacity: 128,000 digital / 4,000 analog points
• Temperature Range: Standard industrial operation (0-60°C)
• Noise Immunity: High interference resistance in industrial environments
• Power Consumption: 2.5W (5mA @1.2V DC, 800mA @5.1V DC)

Compatibility

• Chassis: 1756-A4, A7, A10, A13, A17 series
• Networks: EtherNet/IP, ControlNet, DeviceNet
• Safety System: L71S pairs with 1756-L7SP module
• SD Cards: Rockwell 1784-SD1/SD2 only

Certifications

• L71S meets SIL 3 / Cat.4/PLe safety standards
• Industrial EMI/RFI immunity certified
• CE, RoHS compliant

Packaging Includes

• Controller module
• 1GB SD card (1784-SD1)
• Energy storage capacitors

Warranty & Shipping

• 12-month warranty
• Global shipping via FedEx, UPS, DHL
• Tracking provided for all orders

Frequently Asked Questions

• Can I use third-party SD cards?
• No – only Rockwell cards prevent data corruption
• Does L71S support redundancy?
• No – but pairs with safety partner module
• Programming languages supported?
• Ladder logic, structured text, function blocks
• Battery backup required?
• No – capacitor modules provide energy storage
• Maximum communication connections?
• 500 controller connections supported