1756-L81E: ControlLogix 5580 Processor, 3MB, EtherNet/USB
The 1756-L81E is the ControlLogix 5580 Processor, 3MB, EtherNet/USB covered on this page. The attribute that decides whether it fits the existing installation without modification is 6.2 Watts.
On this unit controllogix 5580 processor, 3mb, ethernet/usb is the figure that decides fit and function. A communication or network module is judged by the protocol it carries and the bus it joins, not by its catalogue headline. controllogix 5580 processor, 3mb, ethernet/usb sets which controllers and field devices it can bridge, and the isolation and termination it provides. Matching 6.2 Watts against the existing network topology avoids a module that fits the rack but cannot talk to the rest of the system.
| Feature | Specification |
|---|---|
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1756-L81E |
| Part Number | 1756-L81E |
| User Memory | 3 MB |
| Power Dissipation | 6.2 Watts |
| Current Draw (5.1V) | 1.20 mA |
| Current Draw (1.2V DC) | 5.0 mA |
| Isolation Voltage | 50 Volts Continuous |
| Thermal Dissipation | 21.2 BTU/hr |
| Max Digital I/O | 128,000 |
| Max Analog I/O | 4,000 |
| Communication | 1 Ethernet, 1 USB |
| Chassis Compatibility | 1756-A4, A7, A10, A13, A17 series |
| Power Supply | 1756-PA50, PB72, etc. |
Related Configurations
Other published configurations in the same family — confirm the distinguishing specification against your installation:
| Related Part Number | Configuration Difference |
|---|---|
| allen-bradley-1756-l81e-nse-controllogix-5580-controller | confirm the configuration against your installation |
| allen-bradley-1756-l81ek-controllogix-5580-controller-3mb-memory | confirm the configuration against your installation |
| allen-bradley-1756-l81ep-controllogix-5580e-process-controller | confirm the configuration against your installation |
| allen-bradley-1756-l81es-guardlogix-5580-safety-controller-overview | confirm the configuration against your installation |
| allen-bradley-1756-l81ext-controllogix-xt-controller | confirm the configuration against your installation |
All Allen-Bradley parts · Comm
Availability & Condition at AutoDCSTech
| Part Number | 1756-L81E |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
