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PRODUCT DESCRIPTION
PlantPAx process control with 40 MB user memory
Allen-Bradley 1756-L85EP is a ControlLogix 5580 process controller with 40 MB of user memory and support for up to 300 EtherNet/IP devices. Dedicated PlantPAx process instructions and the default process tasking model support documented plant-wide control applications.
An embedded gigabit Ethernet port and USB service connection support the configured automation system. Before installation or migration, check the PlantPAx release, controller firmware, chassis and project. Redundancy imposes specific communication and motion restrictions, so confirm the intended architecture against the applicable manufacturer manuals.
An embedded gigabit Ethernet port and USB service connection support the configured automation system. Before installation or migration, check the PlantPAx release, controller firmware, chassis and project. Redundancy imposes specific communication and motion restrictions, so confirm the intended architecture against the applicable manufacturer manuals.
BEFORE YOU BUY
Confirm the complete installed configuration
ACTUAL APPLICATIONS
Process-control roles for 1756-L85EP
These applications follow the official process-controller and PlantPAx documentation. They describe engineering roles within a configured system; they do not identify a named customer installation or establish suitability without a project review.
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01 · Process execution
Plant-wide process coordination
The 40 MB controller runs the configured PlantPAx process application and coordinates compatible field I/O. Size process instructions, task scheduling and network loading for the actual plant design. -
02 · Availability
Redundant process controller pairs
Within a supported redundancy architecture, the process controller participates in the qualified partner pair. The embedded Ethernet port and integrated motion are unavailable when redundancy is enabled; use the documented communications arrangement. -
03 · Operational data
Process data access
The official controller table lists OPC UA support subject to software-version requirements. Configure the required process data and security policy, and assess loading rather than assuming the maximum node count is an operating performance guarantee.
Technical specifications for 1756-L85EP
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Product Model1756-L85EP
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Product ParametersControlLogix 5580 process controller
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In stock1 unit
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ManufacturerAllen-Bradley
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User memory40 MB
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EtherNet/IP device capacity300 maximum
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Controller tasks32
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Programs per task1000
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Embedded EthernetOne port; 10/100/1000 Mbps
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USB service interfaceUSB 2.0; temporary local programming
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Backplane current1.2 A at 5.1 V DC; 5 mA at 1.2 V DC
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Power dissipation6.2 W
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Isolation rating50 V continuous; documented port-to-backplane isolation
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Conformal coatingYes
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Slot widthOne chassis slot
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Operating temperature-25 to +60 degrees Celsius in supported Series C standard chassis
View all additional
Alternative Names
1756-L85EP PlantPAx controller
ControlLogix 5580 1756-L85EP
Allen-Bradley 1756-L85EP process PLC
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
PLANTPAX PROCESS CONTROL
Match the controller to the installed process architecture
The process controller uses dedicated PlantPAx instructions and a configured process tasking model. Confirm the installed PlantPAx release, project instruction requirements and sufficient user memory before selecting the catalog number.
Verify the supported chassis, power supply and controller firmware. Review the environmental rating for the whole assembly, including the chassis series and the protective measures required for corrosive atmospheres.
For redundant operation, follow the supported firmware and module configuration. The embedded Ethernet port is off and integrated motion is unsupported when controller redundancy is enabled; other network restrictions also apply.
Features:
- PlantPAx release and project compatibility
- Chassis-specific environmental ratings
- Documented redundancy configuration
The Allen-Bradley 1756-L85EP requires process-project and architecture checks before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Rockwell Automation lists 1756-L85EP as End of Life and specifies 31 December 2026 as the discontinuation date. As of the review on 7 September 2026, this date is still in the future.
The manufacturer identifies 1756-L85EPXT in the Direct Replacement category. Check the replacement controller firmware, supported chassis, PlantPAx release and application requirements before deciding the migration work.
Back up the approved controller project and verify communication paths and process-task behavior after replacement. Where redundancy is configured, validate qualification, synchronization and switchover using the applicable manufacturer procedure.
Features:
- Check the announced 31 December 2026 lifecycle date
- Review 1756-L85EPXT compatibility
- Validate the migrated process application
The Allen-Bradley 1756-L85EP requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Amikon is an independent supplier. Consult the applicable Rockwell Automation documentation and installed configuration before selection, installation or replacement.
Features:
- Exact-model reference documents
- Hardware and system compatibility checks
- Accessories are supplied only when listed in the quotation
Documentation for the Allen-Bradley 1756-L85EP supports document applicability checks before installation or replacement.
Also searched as
Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed sizePacked dimensions unconfirmed
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Shipping weightGross weight unconfirmed
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS referenceClassification unconfirmed
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OriginUnited States of America
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 1756-L85EP
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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What makes 1756-L85EP a process controller?
It includes the default process tasking model and dedicated PlantPAx process instructions described in the ControlLogix 5580 process-controller documentation. Confirm compatibility with the installed PlantPAx release. -
How much application memory is available?
The exact 1756-L85EP catalog provides 40 MB user memory. Review program use and communications loading before selecting a controller for an existing process application. -
Does controller redundancy retain the embedded Ethernet port?
No. The manufacturer specifications state that the embedded Ethernet port is off when controller redundancy is enabled. Use the supported network modules and architecture described in the redundancy manual. -
Can integrated motion operate in the redundant configuration?
The documented controller-redundancy configuration does not support integrated motion. Review the complete architecture before combining process redundancy and motion requirements. -
When is 1756-L85EP scheduled to be discontinued?
The manufacturer page reviewed on 7 September 2026 gives 31 December 2026 as the discontinuation date and lists End of Life status. This is a scheduled date, not a claim that the product is already discontinued today. -
What successor does Rockwell Automation identify?
The official page lists 1756-L85EPXT as Direct Replacement. Confirm firmware, chassis, PlantPAx release and environmental requirements before migration; the category is not a guarantee that every installed project needs no changes.
READY TO VERIFY YOUR PART?
Get a 1756-L85EP quote with price, lead time and revision check.
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