Name: 1756-L73/B
Brand: Allen-Bradley
SKU: 1756L73B
Price: 8740.00 USD
Availability: PreOrder

Rockwell Automation > PLC & HMI > Controllers > ControlLogix > 1756-L73/B

Overview

Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor, 8MB, B

Mfr. Part Number:	1756-L73/B

Manufacturer:	Allen-Bradley / Rockwell Automation

Description:	Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor with 8 Mbytes Memory, B

Full Description:	Allen-Bradley 1756-L73 ControlLogix Logix5573 Controller with 8 Mbytes Memory and 1 x Built-in USB 2.0 Programming/Download Port, Series B

UPC / GTIN:	10612598876034

Status:	Current Product

Inventory & Prices

PLCH is Not Authorized Distributor of this product

Condition:

SPP (Surplus PLCH Pre-owned)

Warranty:

One Year PLCH Warranty.

Manufacturer's Warranty & Support DO NOT apply.

Availability:

2 available for pre-order

Shipping Date:

Ships on Jul 07, 2026

Estimated Value:

Your Price:

$8,740.00

Quantity:

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Disclaimer

PLC Hardware (PLCH) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens or any other Manufacturers. PLCH is NOT Authorized Dealer of this product. The product may be of older version, date codes or design than that available from authorized dealers. As PLCH is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. PLCH sells pre-owned SURPLUS and USED equipment ONLY and DOES NOT sell SOFTWARE or FIRMWARE licenses. Some hardware products may contain software and firmware and may not be legally operated without first obtaining a proper license from the manufacturer. PLCH makes no representation as to whether a product will or will not have software or firmware and, if it does, whether the software or firmware is the revision level that you need for your application. PLCH also makes no representations as to your ability or right to download or otherwise obtain software or firmware for the product from Original Manufacturer, its distributors, or any other source. PLCH also makes no representations as to your right to install any such software or firmware on the product. PLCH will not obtain or supply software or firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing software or firmware. Customer acknowledges and agrees that PLCH DOES NOT provide any software, firmware, operating system or right-to-use licenses with the products it sells. Customers understand and agree that proper software (firmware) licensing, maintenance and upgrades are subject to applicable manufacturer's Licensing Agreement or similar document.

Similar Parts	Mfr	Cond	Description	Est Val	Price	Stock	Qty

1756-L73/A	RA	UPP	Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor with 8 Mbytes Memory, A		$1,175.00	3 days	3
1756-L73/B	RA	SOP	Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor with 8 Mbytes Memory, B		$2,711.00	3 days	3
1756-L73/B	RA	UPP	Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor with 8 Mbytes Memory, B		$1,163.00	in stock	5
1756-L73K/B	RA	UPP	Allen-Bradley 1756-L73K ControlLogix Logix5673 Processor, 8MB, Conformal Coat, B		$1,163.00	in stock	1
1756-L73S/B	RA	SOP	Allen Bradley 1756-L73S GuardLogix Processor 8MB Std / 4MB Safety Memory, Ser. B		$1,163.00	in stock	1
1756-L73S/B	RA	SPP	Allen Bradley 1756-L73S GuardLogix Processor 8MB Std / 4MB Safety Memory, Ser. B		$1,640.00	3 days	1
1756-L73S/B	RA	SSP	Allen Bradley 1756-L73S GuardLogix Processor 8MB Std / 4MB Safety Memory, Ser. B		$1,454.00	in stock	1
1756-L73S/B	RA	UPP	Allen Bradley 1756-L73S GuardLogix Processor 8MB Std / 4MB Safety Memory, Ser. B		$646.00	in stock	1

Specs & Technical Data

Specifications:	Allen-Bradley 1756-L73 ControlLogix Logix5573 Processor, Communication Ports: 1 x USB 2.0, Full Speed (12 Mbps); Available User Memory: 8 MB; I/O Memory: 0.98 MB; Optional Nonvolatile Memory: 1GB SD Card (1784-SD1), 2GB SD Card (1784-SD2); Controller Connections Supported, Max: 500; Controller Tasks: 32 Tasks, 100 Programs/Task, Event Tasks - All event triggers; Digital I/O, Max: 128,000; Analog I/O, Max: 4,000; Total I/O, Max: 128,000; Current Draw: 800mA @ 5V DC, 5mA @ 1.2V DC; Power Dissipation: 2.5 W.

Miscellaneous:	Allen-Bradley ControlLogix 1756-L73 Controller Enhancements: Optimised for control of high performance motion drives on EtherNet/IP or SERCOS interfaces, supporting as many as 100 axes; Faster dual-core custom CPU improves controller scan times; Increased CIP connections from 250 to 500; Unconnected buffer defaults now increased from 10 to 20, (maximum 40); 1756-L73 provides “Double-Data Rate” (DDR) backplane communications; 1 GB Removable Secure Digital Memory Card (SDRAM); Energy Storage Module (ESM).