1747-L542 Sold Price History

Allen-Bradley · observed sold prices, the 90 days ending August 31, 2026

Sold listings (90d)	Median sold	Sold range	Median ask*	Sold vs ask
90	$162	$40.00–$5,279	$100	+62%

Lifecycle status: Discontinued per Rockwell Automation, checked 2026-08-31.

Median sold price by condition

Condition	Sold	Median	Range
New / surplus	32	$288	$219–$2,095
Open box	11	$650	$200–$5,279
Refurbished	4	$79.45	$59.76–$95.00
Used	42	$79.95	$40.00–$215
Unspecified	1	$150	$150–$150

Median sold ($162) vs median asking price across covered sellers ($100): +62%. Condition mix differs between sold and asking listings; see methodology.

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Individual sold listings (90)

Date	Listing	Condition	Sold price
2026-08-29	Allen Bradley 1747-L542 /B Rev 3 SLC 500 5/04 CPU w/Key	Pre-Owned	$65.00
2026-08-28	Allen-Bradley 1747-L542 Ser B Rev 3 SLC 500 CPU Processor Unit / No Key or Cover	Pre-Owned	$215
2026-08-28	New AB 1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT Allen Bradley 1747L542	Brand New	$346
2026-08-26	Allen-Bradley SLC 500 SLC 5/04 CPU Processor Unit/Module 1747-L542 SER C	Pre-Owned	$61.00
2026-08-25	Allen Bradley 1747-L542 / A	Pre-Owned	$85.00
2026-08-25	1747-L542 \| Allen-Bradley SLC 5/04 CPU Controller 32K DH+ & RS-232 Ports	Brand New	$449
2026-08-19	Open Pre-owned Allen Bradley 1747-L542 /D SLC 500 5/04 32K RS232/DH+ Controller	New – Open box	$1,559
2026-08-17	Allen-Bradley 1747-L542 SLC 500 5/04 CPU Processor Module Ser.C Rev 7	Pre-Owned	$69.99
2026-08-15	Allen Bradley 1747-L542 Ser A - SLC 500 5/04 CPU 32K	Pre-Owned	$94.23
2026-08-14	1 PC New Factory Sealed AB 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT US Free Tax	Brand New	$228
2026-08-14	Allen-Bradley 1747-L542 ser B rev 3 SLC 500 PLC CPU Processor	Refurbished	$95.00
2026-08-14	1747-L542 NEW AB 1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT Real US Stock	Brand New	$298
2026-08-14	New Factory Sealed Allen-Bradley 1747-L542 /C SLC 500 5/04 CPU PROCESSOR UNIT	Brand New	$281
2026-08-14	Allen-Bradley NEW Sealed 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT	Brand New	$339
2026-08-13	Allen Bradley 1747-L542 /B Rev 3 SLC 500 5/04 CPU (4.3.3)	Refurbished	$59.76
2026-08-13	AB 1747-L542 /B SLC 500 5/04 CPU PROCESSOR UNIT Factory Sealed AB US Free Tax	Brand New	$254
2026-08-12	Allen Bradley slc 5/04 cpu 1747-L542 Fully Tested	Pre-Owned	$99.00
2026-08-11	AB 1747-L542 /B SLC 500 5/04 CPU PROCESSOR UNIT Factory Sealed AB US Free Tax	Brand New	$269
2026-08-10	AB SLC500 1746-P2,1747-l542,IB16,1747-SN,0B8, 1747-M11 ,-NR4 7 SLOT RACK	Pre-Owned	$95.00
2026-08-08	Allen-Bradley SLC500 Processor Unit 1747-L542 Ser.B	Brand New	$249
2026-08-07	LOT of (3) 1747-L542 SLC CPU Processor Unit	New – Open box	$5,279
2026-08-06	Allen Bradley 1747-L542 SLC 500 Processor Unit SLC 5/04 CPU Ser C Rev 7	Pre-Owned	$79.99
2026-08-06	Allen-Bradley 1747-L542 SLC 5/04 32K Controller	Pre-Owned	$40.00
2026-08-04	Allen-Bradley 1747-L542 SLC 500 Processor Unit Series B. Proc Rev 3	Pre-Owned	$53.00
2026-08-03	NEW DISCOUNTED Allen-Bradley 1747-L542/C	Brand New	$219
2026-07-30	Allen Bradley 1747-L542 Processor Module Ser B - NO KEY	Pre-Owned	$47.50
2026-07-29	Allen Bradley SLC 5/04 1747-L542 CPU	Pre-Owned	$100
2026-07-28	Allen Bradley 1747-L542 /C SLC 500 5/04 PLC 1747L542 N241	Pre-Owned	$149
2026-07-28	1747-L542 NEW AB 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT US Same Day Ship	Brand New	$298
2026-07-27	Allen Bradley 1747-L542 SLC 500 5/04 Processor-New No Box	New – Open box	$382
2026-07-27	New Factory Sealed Allen-Bradley 1747-L542 /C SLC 500 5/04 CPU PROCESSOR UNIT	Brand New	$250
2026-07-27	Allen Bradley 1747-L542 SER C SLC 500 PLC Processor (TESTED)	Pre-Owned	$79.99
2026-07-27	Surplus Allen Bradley 1747-L542 /C SLC 500 5/04 RS-232/DH+ 32K Controller	New – Open box	$1,900
2026-07-27	NEW Allen Bradley 1747-L542 SLC 5/04 PLC Processor Controller 32K Series C FW7	New – Open box	$800
2026-07-24	AB 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 NEW Factory Sealed	Brand New	$300
2026-07-23	Allen Bradley 1747-L542 /C Processor Unit SLC500 Operating System 1747-OS401/C	Pre-Owned	$99.99
2026-07-23	Allen-Bradley 1747-L542/B Processor/Controller. Loc3A-10	Pre-Owned	$125
2026-07-23	Allen Bradley AB SLC 500 1747-L542 SER B Proc. Rev 3 1747L542	Pre-Owned	$49.99
2026-07-23	allen bradley 1747-l542 SLC 500 processor unit	Pre-Owned	$60.00
2026-07-23	Allen Bradley 1747-L542 Processor Module Ser A	Pre-Owned	$44.95
2026-07-22	New Factory Sealed Allen-Bradley 1747-L542 /C SLC 500 5/04 CPU PROCESSOR UNIT	Brand New	$281
2026-07-22	New Allen Bradley 1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT 1747L542	Brand New	$281
2026-07-21	New Sealed AB 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 US Free Tax	Brand New	$281
2026-07-20	Surplus Open Allen Bradley 1747-L542 /C SLC 500 SLC 5/04 RS-232/DH+ Controller	New – Open box	$1,260
2026-07-20	1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT New Sealed Allen Bradley	Brand New	$380
2026-07-19	Allen-Bradley 1747-L542 SLC 500 5/04 CPU Processor Module Ser.C Rev 7	Pre-Owned	$85.00
2026-07-18	Allen Bradley 1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT 1747L542	New – Open box	$200
2026-07-17	Allen Bradley SLC 500 1747-L542/C SLC 5/04 CPU Processor Module No Key	Pre-Owned	$65.00
2026-07-16	1747-L542 AB /B SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 NEW Factory Sealed	Brand New	$224
2026-07-16	Allen Bradley 1747-L542 SLC 500 Processor Unit SLC 5/04 CPU Ser B Rev 3 W/Key	Pre-Owned	$79.99
2026-07-16	Allen Bradley 1747-L542 SLC 500 Ser C Rev 7 1747-OS401 Ser C FRN 5 1747 (TBI)	Pre-Owned	$89.99
2026-07-16	Allen-Bradley 1747-L542 SLC 500 SLC 5/04 CPU 32K Series D DH+ RS232	Pre-Owned	$125
2026-07-15	Allen Bradley 1747-L542 /B SLC 500 SLC 5/04 CPU Processor Module FRN 9 1747L542	Pre-Owned	$175
2026-07-14	New Factory Sealed Allen-Bradley 1747-L542 /C SLC 500 5/04 CPU PROCESSOR UNIT	Brand New	$277
2026-07-10	New Sealed Allen Bradley 1747-L542 Series D SLC 500 5/04 16K PLC Processor US	Brand New	$367
2026-07-10	Allen Bradley 1747-L542 /C SLC 500 5/04 CPU Processor 1747L542	Pre-Owned	$50.00
2026-07-09	Allen Bradley 1747-L542 /C SLC 500 5/04 CPU Processor 1747L542	Pre-Owned	$58.00
2026-07-07	AB 1747-L542 /B SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 NEW Factory Sealed	Brand New	$298
2026-07-06	Allen Bradley 1747-L542 SLC500 Processor Unit 24VDC 200mA Ser.B	Pre-Owned	$69.00
2026-07-04	Allen-Bradley SLC 500 SLC 5/04 CPU Processor Unit Module 1747-L542	New – Open box	$490
2026-07-03	New Sealed AB 1747-L542 SER B SLC 500 5/04 CPU Processor Unit 1747L542	Brand New	$328
2026-07-01	Allen Bradley 1747-L542 SER C SLC 500 5/04 CPU PROCESSOR UNIT AB 1747L542	Brand New	$279
2026-07-01	Allen Bradley 1747-L542 /C SLC 500 5/04 CPU Processor 1747L542 - No Door	Pre-Owned	$79.99
2026-06-30	Allen Bradley 1747-L542 Controller Module	New – Open box	$650
2026-06-30	Allen Bradley 1747-L542 Series B SLC500 Processor Unit	Brand New	$2,095
2026-06-30	Allen Bradley 1747-L542 SLC 500 Processor Unit SER C USA	New – Open box	$500
2026-06-28	Allen-Bradley 1747-L542 SLC 5/04 32K Controller	Pre-Owned	$85.00
2026-06-25	Allen-Bradley 1747-L542 ser C rev 7 SLC 500 5/04 CPU new 3D door.	Refurbished	$89.00
2026-06-24	New Sealed AB 1747-L542 SER B SLC 500 5/04 CPU Processor Unit 1747L542	Brand New	$317
2026-06-23	Allen Bradley 1747-L542 SLC5/04 CPU Processor 1747-M11 Fully Tested	Great Price To Sell	$150
2026-06-23	Allen-Bradley 1747-L542 SLC 5/04 32K PLC Controller Free Shipping	Brand New	$339
2026-06-23	New Factory Sealed 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT 1747L542	Brand New	$224
2026-06-22	Allen Bradley #1747-L542, SER-C, REV-7, HEHI-2451	Pre-Owned	$99.99
2026-06-16	Allen-Bradley SLC 500 SLC 5/04 Processor Unit CPU Module 1747-L542	Brand New	$250
2026-06-16	Allen Bradley 1747-L542 /B SLC 500 5/04 PLC 1747L542 Read Description N70	Pre-Owned	$69.00
2026-06-15	New Allen-Bradley 1747-L542 SER B SLC 500 5/04 CPU PROCESSOR UNIT Module	Brand New	$296
2026-06-15	Allen Bradley 1747-L542/1747-OS401 SLC 500 5/04 CPU Processor Unit	Pre-Owned	$51.00
2026-06-15	ALLEN BRADLEY SLC500 PROCESSOR MODULE 1747-L542/C	Pre-Owned	$69.95
2026-06-15	ALLEN BRADLEY SLC500 PROCESSOR UNIT 1747-L542/B	Pre-Owned	$79.95
2026-06-15	ALLEN BRADLEY SLC500 PROCESSOR UNIT 1747-L542/A	Pre-Owned	$79.95
2026-06-11	Allen Bradley 1747-L542 /B SLC 500 5/04 CPU Processor 1747L542 - No Door / Key	Pre-Owned	$69.99
2026-06-11	Allen-Bradley 1747-L542 CPU Processor for SLC 500 PLC SER B, OS401 C/7 Sealed	Brand New	$700
2026-06-10	Allen Bradley SLC500 Processor 1747-L542 Ser B Rev 3	Pre-Owned	$60.00
2026-06-10	Allen Bradley AB 1747-L542 Ser A SLC 500 5/04 CPU Processor Unit	Pre-Owned	$45.00
2026-06-09	Allen-Bradley 1747-L542 SLC 500 PLC Processor Module	Pre-Owned	$80.00
2026-06-08	AB 1747-L542 /B SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 NEW Factory Sealed	Brand New	$295
2026-06-06	Allen-Bradley 1747-L542 SLC 5/04 32K Ser D CPU Processor Unit	New – Open box	$399
2026-06-06	Allen Bradley 1747-L542 SLC5/04 Fully Tested Excellent Condition	Pre-Owned	$65.00
2026-06-05	New Sealed AB 1747-L542 SLC 500 5/04 CPU PROCESSOR UNIT 1747L542 US Free Tax	Brand New	$274
2026-06-02	Allen Bradley 1747-L542 /B Rev 3 SLC 500 5/04 CPU (4.3.3)	Refurbished	$69.90

*Asking prices aggregated across 10 covered sellers, observed 25 Aug 2026.

Data captured August 31, 2026. Sold prices are individual observed eBay transactions, title-matched to 1747-L542. All tracked parts