1756-L73 Allen-Bradley | 8MB Logix5673 Processor Module

Allen-Bradley, a Rockwell Automation brand, makes the 1756-L73 for large automation tasks. This ControlLogix 5570 PAC gives 8 MB user memory, 128,000 total I/O, and 32 tasks with 100 programs each.

Key Features of 1756-L73

• Part of ControlLogix series; supports simplex or redundant high‑availability configs.
• Handles 128,000 digital I/O and 4,000 analog I/O locally or remotely.
• Links via Ethernet/IP, ControlNet, DeviceNet, DH+, RIO, SynchLink, and third‑party protocols.
• Integrated motion via SERCOS, analog sensors, and motion over Ethernet/IP.

Core Specs – Brand: Allen-Bradley | Model: 1756-L73

• User memory: 8.00 MB; I/O memory: 0.98 MB.
• Max digital I/O: 128,000; Max analog I/O: 4,000.
• Tasks: 32 controller tasks, 100 programs per task.
• Power: 2.50 W; draws 800 mA at 5.10 V DC, 5.00 mA at 1.20 V DC.
• USB 2.0: 12.00 Mbps; Isolation: 30.00 V continuous.
• Operating temp: 0.00–60.00 °C; Non‑operating: -40.00–85.00 °C.
• Humidity: 5–95% non‑condensing; Weight: 0.25 kg.

Installation Tips

• Fit 1756-L73 in any slot of 1756‑A4, 1756‑A7, 1756‑A10, 1756‑A13, 1756‑A17 chassis.
• Use standard or redundant power supplies matched to your system needs.
• Keep clear of strong EMI; use USB 2.0 for fast, safe programming.

Package Contents

• One 1756-L73 controller module; no extra items included.
• Ships via FedEx, UPS, or DHL for fast, trackable delivery.

FAQ

• Q: What is the I/O limit of 1756-L73?
  A: Up to 128,000 digital I/O and 4,000 analog I/O.
• Q: Is a battery needed for memory retention?
  A: No, energy storage keeps memory without a battery.
• Q: Which languages can program 1756-L73?
  A: Ladder, structured text, function block, sequential function chart.