ControlLogix — Available Products
1756-CP3 Allen Bradley
$174.00
Allen-Bradley 1756-A10
$1,108.99
Allen-Bradley 1756-A13
$1,115.99
Allen-Bradley 1756-A17
$889.00
Allen-Bradley 1756-A4
$884.99
Allen-Bradley 1756-A7
$1,052.00
Allen-Bradley 1756-BA1
$144.00
Allen-Bradley 1756-BA2
$43.00
Allen-Bradley 1756-BATA
$425.99
Allen-Bradley 1756-BATM
$565.00
Allen-Bradley 1756-CFM
$2,116.99
Allen-Bradley 1756-CJC
$323.99
Allen-Bradley 1756-CMS1B1
$4,156.00
Allen-Bradley 1756-CN2
$937.00
Allen-Bradley 1756-CN2R
$2,543.00
Allen-Bradley 1756-CN2RXT
$1,686.00
Allen-Bradley 1756-CNB
$280.99
Allen-Bradley 1756-CNBR
$380.00
Allen-Bradley 1756-CPR
$240.00
Allen-Bradley 1756-CPR2
$233.99
Allen-Bradley 1756-DHRIO
$609.00
Allen-Bradley 1756-DNB/E
$397.99
Allen-Bradley 1756-EN2F
$4,994.99
Allen-Bradley 1756-EN2T/D
$3,388.99
Overview
ControlLogix is the flagship Rockwell PLC platform for large discrete, process and motion control systems. Palm Parts Solution stocks 1756 chassis, L7x/L8x processors, ENBT/EN2T communications, analog and digital I/O modules.
Machine down? Get a fast quote on ControlLogix parts.
New, surplus, and refurbished Allen-Bradley options. Request a quote or speak directly with an automation specialist for emergency sourcing.
Common Faults
- Module fault on 1756-IB16/OB16 — field-side short or blown fuse
- ControlNet keeper conflict — duplicate node or NUT mismatch
- Comms timeout — bridge module firmware mismatch
- L7x/L8x major fault — task overlap, watchdog, or memory exhausted
- Power supply fault — 1756-PA72 fan failure or input over-current
Troubleshooting Basics
- Studio 5000 → Controller Properties → Major Faults + minor faults.
- For 1756 module faults, check the module status LED and refer to pub 1756-RMxxx.
- ControlNet — verify keeper status, NUT, and physical media via RSNetWorx.
- Use the chassis status display (L7x/L8x) to read fault codes without going online.
- Swap suspected module to a spare slot to isolate the fault.
Replacement Options
Palm Parts Solution sources every ControlLogix part in three conditions:
- New — sealed, factory-fresh stock
- Surplus — never installed, original packaging, full warranty
- Refurbished — bench-tested to OEM spec, 12-month warranty
Most orders ship same day from US warehouse stock. Critical machine-down requests can be expedited worldwide.
Migration Recommendations
See our ControlLogix Upgrade Guide. 1756-L6x/L7x → L8x reuses your chassis.
Compatibility
- 1756 chassis I/O, EtherNet/IP, ControlNet, DeviceNet
- Studio 5000 Logix Designer
- Redundancy via 1756-RM2 (L7x/L8x)
Series in this family
1756-A chassis — 4, 7, 10, 13 and 17 slot.
1756-IB, OB, IF, OF digital and analog I/O.
1756-PA AC and 1756-PB DC power supplies.
1756-L ControlLogix processors — flagship Logix CPUs.
1756-EN EtherNet/IP and 1756-CN ControlNet bridges.
Frequently Ordered Together
- 1756-PA72 / PA75 power supply
- 1756-A4/A7/A10/A13/A17 chassis
- 1756-EN2T / EN2TR EtherNet/IP module
- 1756-IB16 / OB16 discrete I/O
- SD card (1784-SD1/SD2)
Compatible & related families
Why Buy From Palm Parts Solution
DHL, FedEx, UPS — door-to-door in 1-4 business days.
RFQs sent during business hours are answered the same business day.
New, surplus and refurbished Allen-Bradley options — request current availability.
24/7 emergency sourcing for production-critical failures.
Custom pricing on volume, repair, and hard-to-find SKUs.
Talk to engineers, not call-center agents.
We hunt down discontinued and obsolete parts globally.
Lifecycle-end Allen-Bradley parts — sourced, tested, warrantied.
Buying guides & technical resources
A practical buying guide for Allen-Bradley ControlLogix — models, prefixes, compatibility and replacement options.
A comprehensive technical compatibility matrix for Allen-Bradley 1756 ControlLogix I/O modules, backplanes, controllers, and multi-protocol network gateways.
An engineering reference for Rockwell Automation ControlLogix compatibility. Verify firmware, chassis, power supply, and network interface support.
This engineering guide details the path for upgrading obsolete 1756-L61 controllers to modern 1756-L71 or 1756-L81E modules, focusing on hardware, network, and firmware mapping.
This technical guide outlines direct replacement paths, hardware compatibility, and software migration steps for upgrading legacy ControlLogix CPUs to L7 and L8 architectures.
Transition your legacy Allen-Bradley 1756-L63 controller to modern ControlLogix 5580 hardware. This guide details direct replacement paths, firmware considerations, and software migrations.
This comprehensive guide highlights critical compatibility, software, and physical changes required when upgrading the Allen-Bradley 1756-L71 ControlLogix 5570 controller to the 5580 platform.
Frequently asked questions
What is ControlLogix?
Allen-Bradley's flagship Logix platform built around the 1756 chassis. Supports redundancy, integrated motion, GuardLogix safety and process control on one backplane.
What 1756 chassis sizes exist?
1756-A4, A7, A10, A13 and A17 (4/7/10/13/17 slots). Any 1756 module fits any chassis slot.
Does ControlLogix support redundancy?
Yes — with the 1756-RM redundancy module and a matched pair of chassis for bumpless controller redundancy.
1756-EN2T vs 1756-EN3T — what is the difference?
EN2T is the standard high-performance EtherNet/IP bridge. EN3T adds linear / DLR support for ring-resilient networks.
Which software programs ControlLogix?
Studio 5000 Logix Designer (CompactLogix/ControlLogix/GuardLogix). Studio 5000 Architect for system-level design.