Technical Specifications for 1756-L81E
1756‑L81E is Rockwell Automation C 5580 series high‑performance programmable automation controller (PAC). Equipped with 3 MB user memory, one integrated gigabit EtherNet/IP port (10/100/1000 Mbps) and USB 2.0 programming‑only port. It supports maximum 100 EtherNet/IP nodes, up to 128000 digital I/O points and 4000 analog I/O points, 32 configurable tasks. A 4‑character alphanumeric front‑panel display provides real‑time diagnostic status information. SD card slot enables program backup, restore and firmware update. Works with Studio 5000 Logix Designer software. Installed in standard 1756 series chassis, delivers powerful discrete control, process control and motion control performance for medium‑to‑complex industrial automation projects, ideal for new system deployment and spare‑part replacement for existing ControlLogix platforms.
| Item | Specification |
|---|---|
| Model | 1756‑L81E |
| Manufacturer | Allen‑Bradley / Rockwell Automation |
| Series | ControlLogix 5580 PAC Controller |
| User Memory | 3 MB |
| On‑board Ports | 1×Gigabit EtherNet/IP (RJ45), 1×USB2.0 (programming only) |
| Max EtherNet/IP Nodes | 100 |
| Max Digital I/O | 128000 points |
| Max Analog I/O | 4000 points |
| Task Quantity | 32 tasks |
| Display | 4‑character alphanumeric front display |
| Storage Media | SD card slot (max 2GB) |
| Programming Software | Studio 5000 Logix Designer |
| Power Consumption | 6.2 W |
| Current Draw | 1.20 A @5.1 VDC, 5 mA @1.2 VDC |
| Operating Temperature | 0 °C ~ +60 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Relative Humidity | 5‑95 % non‑condensing |
| Mounting | Install into 1756 ControlLogix chassis |
| Net Weight (kg) | 0.394 Kg |
| Product Dimensions(W×H×D) | 34.55 mm ×145 mm ×136.6 mm |
| UPC Code | 887172361326 |
| Country of Origin | USA |
| Approvals | UL, CSA, CE |
