Medar
514A-C2
Medar 514A-C2 Weld Control Processor Board Z80 S514A-01-C40 Medweld 1000 Rev C2
Only 4 left
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$734.89
PLC Processors & CPUs
328 listings · 260 in stock
Right now KIV Industrial Parts has 260 PLC Processors & CPUs listings in stock, every one photographed in our warehouse so the pictures show the part you get. The brands we stock most here are Allen-Bradley, Siemens and Mitsubishi.
More about PLC Processors & CPUs
In terms of condition, there are 165 used, 63 open box, 24 new surplus, 5 sold for parts or repair and 3 refurbished. You can pick one up for as little as $6.89; the most expensive is $10,779.89. Everything ships from Princeton, TX: orders placed by 3 PM CT on a business day (Mon to Fri) go out the same day, and shipping is free to all 50 US states. Our 30-day guarantee covers every item here except those sold for parts or repair.
Safematic
ST-1330
Safematic 46004 ST-1330 Lubrication Control Center CPU Board V 4.2 Firmware P1.7
Only 1 left
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$167.89
Marposs
6321600601
Marposs 6321600601 Gauge Control Processor Relay Card NEC D8085AHC 4x RTD14024
Only 1 left
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$381.89
Tyco Electronics
1771-WG
Tyco Electronics 1771-WG PLC-5 I/O Field Wiring Arm 21-Terminal Block 16-Point
Only 1 left
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$9.89
CTC
AMM-4000-1
CTC AMM-4000-1 Access 4000 Communications Master Processor Module Class 1 Div 2
Only 1 left
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$497.89
Allen-Bradley
1771-PDC
Allen-Bradley 1771-PDC Ser A PLC-5 2 Loop PID Control Module 15VDC 4.2VA Rev C
Only 1 left
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$52.89
Allen-Bradley
1785-KE
Allen-Bradley 1785-KE Series B PLC-5 DH+/RS-232 Interface 5VDC 1.2A 57.6K Rev H
Only 3 left
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$35.89
ABB
6643386M6
ABB 6643386M6 REV A Processor Module Mezzanine 6644788A1 Infi 90 Symphony Rack
Only 1 left
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$871.89
Allen-Bradley
1756-CNB/D
Allen-Bradley 1756-CNB/D ControlLogix ControlNet Bridge 970mA@5.1VDC 1.7mA@24VDC
Only 1 left
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$86.89
Siemens
A5E00120081-01
Siemens A5E00120081-01 SIMATIC TP170B Main Board NEC VR4181 CPU 3x DB9 CF Slot
Only 1 left
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$195.89
Allen-Bradley
PN-13853
Allen-Bradley PN-13853 1756-ENBT Ser A ControlLogix EtherNet/IP Bridge 10/100
Only 1 left
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$23.89
Mitsubishi
A2ACPU
Mitsubishi A2ACPU MELSEC A-Series Programmable Controller CPU Module 25-pin Port
Only 1 left
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$107.89
Allen-Bradley
1768-EWEB
Allen-Bradley 1768-EWEB Ser A CompactLogix EtherNet/IP Web Server 834mA 5.2VDC
Only 1 left
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$117.89
Siemens
6ES5942-7UB11
Siemens 6ES5942-7UB11 SIMATIC S5-115U CPU 942B Module E-Stand 03 10 KB RAM PLC
Only 1 left
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$146.89
Foxboro
P0917YZ
Foxboro P0917YZ FCP270 Field Control Processor I/A Series 8W T4 60C Rev 0U Div 2
In stock
Free shippingShips next business day
$321.89
Foxboro
P0917YZ
Foxboro FCP270 P0917YZ Field Control Processor I/A Series 24VDC 8W 60C Rev 0T
In stock
Free shippingShips next business day
$2,036.89
Siemens
6ES5 530-7LA12
Siemens 6ES5 530-7LA12 SIMATIC S5 CP 530 Communication Processor SINEC L1 Module
Only 1 left
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$117.89
Industrial part
DAP820/103
Microstar Laboratories DAP820/103 Data Acquisition Processor 16-bit ISA 80C186XL
Only 1 left
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$616.89
Siemens
6ES7340-1AH02-0AE0
Siemens 6ES7340-1AH02-0AE0 SIMATIC S7-300 CP340 Processor RS-232C 3964(R) ASCII
Only 2 left
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$48.89
Allen-Bradley
1756-L55/A
Allen-Bradley 1756-L55/A ControlLogix Processor 3.5MB RS232 630mA 5.1VDC Ser A
Only 4 left
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$43.89
Allen-Bradley
1747-L531
Allen-Bradley 1747-L531 SLC 5/03 PLC CPU Processor 8K Ser E Rev A DH-485 RS-232
In stock
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$77.89
Allen-Bradley
1756-L63
Allen-Bradley 1756-L63 ControlLogix 5563 Processor Ser B 8MB RS232 CompactFlash
Only 1 left
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$78.89
Allen-Bradley
1756-L55
Allen-Bradley 1756-L55 Ser A ControlLogix Processor 750KB 1756-M12 RS232 FW 1.4
Only 1 left
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$29.89
Allen-Bradley
1756-DHRIO
Allen-Bradley 1756-DHRIO ControlLogix DH+/RIO Interface Module Ser C 2 Ch 850mA
Only 1 left
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$23.89
Siemens
6ES7340-1AH02-0AE0
Siemens 6ES7340-1AH02-0AE0 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$370.89
Siemens
6ES5 943-7UA11
Siemens 6ES5 943-7UA11 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$1,630.89
Allen-Bradley
1772-MJ
Allen-Bradley 1772-MJ PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$103.89
Honeywell
620-0026
Honeywell 620-0026 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$997.89
CTC
AMM-4000-1
CTC AMM-4000-1 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$1,434.89
Allen-Bradley
1756-L63
Allen-Bradley 1756-L63 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$561.89
Allen-Bradley
1747-L542
Allen-Bradley 1747-L542 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$459.89
Allen-Bradley
1772-LXP
Allen-Bradley 1772-LXP PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$656.89
Allen-Bradley
1747-L552
Allen-Bradley 1747-L552 PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$69.89
Allen-Bradley
1756-L62S
Allen-Bradley 1756-L62S PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$512.89
Allen-Bradley
1785-KE
Allen-Bradley 1785-KE PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$2,546.89
Allen-Bradley
1756-L55/A
Allen-Bradley 1756-L55/A PLC Processor, New
Available
Free shippingShips in 3 to 5 business days
$462.89
Get a quote on PLC Processors & CPUs
Need more units than we list, a part you don't see here, or prices for a whole list? Send us the part numbers and quantities and we reply within 1 hour during business hours (Mon to Fri 9 to 4:30 CT).
Coming soon in PLC Processors & CPUs: price being set
On our shelf, not priced yet. Open one to request a quote or get an email when it's priced.
Guides for PLC Processors & CPUs
- Legacy PLCsSLC 500 End of Life: Keep Running or Migrate?Where the SLC 500 stands, which spares keep one running, and how a phased move to CompactLogix keeps downtime short.
- Parts identificationHow to Read an Allen-Bradley Catalog Number & SeriesBulletin numbers, module codes, suffixes, the series letter and firmware revision, and how each one affects whether a replacement will work.
Troubleshooting guides
- TroubleshootingAllen-Bradley PLC Battery Low: Which Battery and Safe SwapThe battery for each controller family, what the BAT or BATT LED and the T10:C10 minor fault mean, how long you have, replacing it safely, and whether the program survives.
- TroubleshootingSiemens S7-1200/S7-1500 ERROR LED & Diagnostic BufferRUN/STOP, ERROR and MAINT patterns on S7-1200 and S7-1500 CPUs, the diagnostic buffer in TIA Portal, on the S7-1500 display and in the web server, and the first checks.
- TroubleshootingPLC Won't Go to RUN? Allen-Bradley Mode and Fault ChecksKeyswitch and mode-switch positions, the faults that block RUN, firmware and project mismatches, missing or wrong I/O modules, forces, and the order to check them in.
- TroubleshootingControlLogix & CompactLogix Major Fault Codes ExplainedMajor fault types and codes (T01 power-up to T07 memory), where to read them in Studio 5000, minor vs major vs I/O faults, the first checks and clearing a fault safely.
- TroubleshootingSiemens S7-300/S7-400 SF & BF LEDs and Diagnostic BufferSF vs BF (and INTF, EXTF, BUSxF on the S7-400), steady vs flashing, reading the diagnostic buffer in STEP 7, and the first checks for modules, PROFIBUS, PROFINET and backup batteries.
PLC Processors & CPUs: common questions
Do you have PLC Processors & CPUs in stock?
Yes. 260 PLC Processors & CPUs listings are in stock right now, priced from $6.89 to $10,779.89. Every one is photographed, and all of them are listed on this page.
Which brands of PLC Processors & CPUs do you carry?
Mostly Allen-Bradley, Siemens and Mitsubishi, plus 71 more brands. The Brand filter on this page narrows the list to one maker.
Do in-stock items in PLC Processors & CPUs ship the same day?
Yes, when you order by 3 PM CT on a business day (Mon to Fri): in-stock items ship the same day from Princeton, TX, with free shipping to all 50 US states.
Can I request a part you don't list in PLC Processors & CPUs?
Yes. Request a quote with the part number and we check our warehouse and our sourcing network. We answer within 1 hour during business hours (Mon to Fri 9 to 4:30 CT).