1756-L85EP

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L85EP

Type

ControlLogix process controller

Application

PLC controller

Used with

ControlLogix 1756 chassis

Controller tasks

32 tasks, including a combination of one continuous, periodic, and event tasks, 1000 programs/task

Built-in communication ports

1 port USB, Embedded Ethernet port

USB port communication

USB 2.0, Full speed (12 Mbps), Programming, configuration, firmware update, and online edits only

Ethernet performance

10/100/1000 Mbps

I/O Capacity (Class 0/1) - packets/second

128,000 without CIP Security 40,000 with integrity 20,000 with integrity and confidentiality

Communication options

EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SERCOS, Third-party process and device networks

EtherNet/IP nodes supported, max

300 nodes

OPC UA nodes supported max

15,000 nodes

Integrated motion

SERCOS interface, Analog options (encoder input, LDT input, SSI input), Integrated Motion on the EtherNet/IP network

Controller redundancy

Full support with Studio 5000 Logix Designer application version 33.00.00 or later.

Programming languages

Relay Ladder Logic (RLL), Structured Text, Function Block Diagram, Sequential Function Chart (SFC)

Standard memory

40 MB

Digital I/O, max

128,000

Analog I/O, max

4000

Nonvolatile memory storage

4 GB Secure Digital (SD) card (1784-SD4), ships pre-installed in the controller

Energy storage module

Embedded in controller, non-removable

Number of power cycles

80,000

Current draw @ 1.2V DC

5.0 mA

Current draw @ 5.1V DC

1.20 A

Power dissipation

6.2 W

Thermal dissipation

21.2 BTU/hr

Isolation voltage

50V (continuous), Basic Insulation type, USB port to backplane, Ethernet port to backplane, and USB port to Ethernet port, Compliant and tested according to IEC/UL 61010-1

Weight, approx

0.394 kg (.868 lb)

Slot width

1

Module location

Chassis-based, any slot

Technical documents (1)

• Rockwell Automation technical data 1756-TD001

Key features

• 40 MB standard memory with pre-installed 4 GB SD card
• USB 2.0 port for programming, configuration and firmware update
• Supports up to 300 EtherNet/IP nodes and 15,000 OPC UA nodes
• Programs in ladder, structured text, function block and SFC
• One slot wide, fits any slot in listed 1756 chassis

About the Allen-Bradley 1756-L85EP

The Allen-Bradley 1756-L85EP is the ControlLogix 5580 Process Controller, described by Rockwell Automation as a 5580E controller with 40 MB user memory, a USB port, one gigabit Ethernet port and 300 EtherNet/IP devices. Rockwell's technical data lists 32 tasks, up to 128,000 digital I/O and up to 4000 analog I/O. Nonvolatile storage is a 4 GB Secure Digital card (1784-SD4), which Rockwell states ships pre-installed in the controller. Rockwell names the 1756-L85EPXT as a Direct Replacement.

What is the 1756-L85EP used for?

The 1756-L85EP runs the control program in a 1756 chassis and connects to devices over EtherNet/IP, with ControlNet, DeviceNet, Data Highway Plus, Remote I/O and SERCOS also listed by Rockwell as communication options. It supports Integrated Motion on the EtherNet/IP network and a SERCOS interface. Rockwell states that controller redundancy is fully supported with Studio 5000 Logix Designer application version 33.00.00 or later.

Lifecycle and successor

Phased out.

OEM successor: 1756-L85EPXT

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the label reads catalog number 1756-L85EP, and note the series letter and firmware revision printed on it. Send us a photo of the label if you want us to confirm the part before you order.