| Manufacturer | Allen-Bradley |
| Product Line | ControlLogix |
| Series | 5580 |
| Module Type | ControlLogix Controller |
| User Memory | 3 MB |
| Maximum I/O | 128,000 |
| Maximum Analog I/O | 4,000 |
| Maximum Digital I/O | 128,000 |
| Current Draw (1.2 Volts DC) | 5.0 Miliamperes |
| Current Draw (5.1 Volts) | 1.20 Miliamperes |
| Power Dissipation | 6.2 Watts |
| Thermal Dissipation | 21.2 BTU per hour |
| Isolation Voltage | 50 Volts Continuous |
| Enclosure | None (Open-Style) |
| Weight | 1.31 lbs (0.60 kg) |
| Maximum Tasks | 32 |
| Maximum Programs per Task | 1,000 |
| Communication Networks | EtherNet/IP, DeviceNet, ControlNet, Remote I/O, Data Highway Plus, SynchLink |
| Ethernet Speeds | 10 Mbps, 100 Mbps, 1000 Mbps |
| Ports | USB 2.0, 1 Gbps Ethernet |
| Conformal Coating | Yes |
| Operating Temperature Range | -25…+70 °C (-13…+158 °F) |
| Programming Languages | Function Block Diagram (FBD), Ladder Diagram (LD), Structured Text (ST), Sequential Function Chart (SFC) |
| EtherNet/IP Nodes | 100 |
What is the user memory capacity of the 1756-L81EK controller?
The 1756-L81EK ControlLogix 5580 series controller features 3 MB of user memory.
What is the maximum number of I/O points supported by the 1756-L81EK?
The controller supports a maximum of 128,000 I/O points, which includes up to 4,000 analog I/O points and 128,000 digital I/O points.
Which communication networks are supported by the 1756-L81EK?
The 1756-L81EK communicates via EtherNet/IP, DeviceNet, ControlNet, Remote I/O, Data Highway Plus, and SynchLink networks. It also supports Ethernet communication speeds of 10 Mbps, 100 Mbps, and 1000 Mbps.
What physical ports are available on the 1756-L81EK controller?
The unit includes USB 2.0 and 1 Gbps Ethernet ports for communication and connectivity.
How many tasks and programs can the 1756-L81EK handle?
The controller supports up to 32 tasks, with a capacity of up to 1,000 programs per task.
Is the 1756-L81EK suitable for harsh or corrosive environments?
Yes, the 1756-L81EK features conformal coating, which provides an extra degree of protection against harsh, corrosive environments. It is designed to withstand temperature ranges from -25°C to +70°C (-13°F to +158°F).
What programming languages are supported by the 1756-L81EK?
The controller supports Function Block Diagram (FBD), Ladder Diagram (LD), Structured Text (ST), and Sequential Function Chart (SFC) programming languages.
What is the power dissipation of the 1756-L81EK?
The power dissipation for the 1756-L81EK is 6.2 Watts, with a thermal dissipation of 21.2 BTU per hour.
Does the Allen-Bradley 1756-L81EK come with a warranty?
Yes. The 1756-L81EK is backed by our 24-Month Replace Industrial Warranty, with no rush fees or hidden warranty charges. If a unit fails under normal use within the warranty period, we repair or replace it.
Is this 1756-L81EK a genuine Allen-Bradley part?
The 1756-L81EK is sourced and verified independently. Replace Industrial, LLC is not a Rockwell Automation Authorized Distributor, and all warranties are provided directly by Replace Industrial.
Is the Allen-Bradley 1756-L81EK new or used?
We offer the 1756-L81EK in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.
What are the key ratings of the 1756-L81EK?
The 1756-L81EK draws 5.0 Miliamperes and operates across -25…+70 °C (-13…+158 °F).
What is the Allen-Bradley 1756-L81EK?
The 1756-L81EK is an Allen-Bradley ControlLogix 1756 ControlLogix Controller.
1756-L81EK
The Allen-Bradley 1756-L81EK is a ControlLogix 5580 series standard controller featuring 3 MB of user memory and conformal coating for protection against harsh, corrosive environments. It supports up to 128,000 I/O points and communicates via EtherNet/IP, DeviceNet, ControlNet, Remote I/O, Data Highway Plus, and SynchLink networks. The unit includes USB 2.0 and 1 Gbps Ethernet ports, supports 32 tasks with up to 1,000 programs per task, and is designed for industrial automation applications requiring reliable performance and flexible integration.
All products are covered by our 2-Year (24-Month) Replace Industrial Warranty. If a unit is found defective under normal use within the warranty period, we repair or replace it at no additional cost, and a unit may be returned for a full refund within 30 days if returned in the same condition it was sent.
Replace Industrial is an independent distributor and does not convey the manufacturer's warranty; all warranties are provided by Replace Industrial alone. Read the full warranty policy
We repair a wide range of industrial automation equipment, including PLCs, HMIs, drives, servo motors, switches, and circuit breakers, with rush service for critical downtime. Request a quote, ship your unit, and we diagnose, repair, and return it. Request a repair quote
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