Mitsubishi
Q38B
Mitsubishi Base Unit Q38B BD650A 062G51A
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PLCs & Automation
2,686 listings · 2,257 in stock
2,686 PLCs & Automation listings in 6 categories, from makers like Allen-Bradley, Siemens, Mitsubishi. Surplus, used and new-surplus, every item photographed. Free shipping to all 50 US states and zero lead time on everything in stock.
Categories in PLCs & Automation
Siemens
U-04BJ
Siemens Simatic U-04BJ 9204
Out of stock
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Mitsubishi
Q02HCPU
Mitsubishi RS-232 Q02HCPU 28K Step
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3M
3M Magconnect Tablet Module Missing Part?
3M Magconnect Tablet Module Missing Part?
Out of stock
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Mitsubishi
Q61P
Mitsubishi Melsec Q61P Melsec Q 100-240VAC 5 VDC 6A 130VA
Out of stock
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Verifone
18343-02
VeriFone 18343-02 REV A 18342-02 CPU V 24 MHz
Out of stock
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Siemens
6ES5 700-8MA11
Siemens Simatics Bus Module 6ES5 700-8MA11
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Foxboro
FBM207
Foxbro FBM207 P0914TD I/A Series 16 Input Channel
Out of stock
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Siemens
S7 6ES7
Siemens Simatic S7 6ES7 321-1BL00-0AA0
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Siemens
S7 6ES7
Siemens Simatic S7 6ES7 322-1BL00-0AA0 E-Stand: 8
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Siemens
6GK5208-0BA10-2AA3
Siemens Simatic NET Industrial Ethernet Switch 1P 6GK5208-0BA10-2AA3 V4.2
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Mitsubishi
QX539B
Mitsubishi QX539B BN634A524G5I QX539 CDP32 CDJ32
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Industrial part
IPG-7001
System Corporation IPG-7001 65-800770-3-00 Revision A Control Module
Out of stock
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Allen-Bradley
1769-ECR
Allen-Bradley 1769-ECR CompactLogix Right End Cap Terminator Rev A
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Omron
C200H-ASC02
Omron C200H-ASC02 ASCII Unit PLC Module 2 Ports 9-pin D-sub C200H-BAT09 Battery
Out of stock
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Omron
C200HW-PA204
Omron C200HW-PA204 PLC 5000 AC 100-120 200-240V 50/60HZ 120VA
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Schneider Electric
TSXRKY12
Schneider Electric 12-Slot TSXRKY12 PLC Rack Chassis PV:03 RL:02 IEC 61131-2
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Omron
CJ1W-ID211
Omron CJ1W-ID211 Input Unit
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Allen-Bradley
1734-ADN
Allen Bradley 1734-ADN 1734-RTB 95716002 REV A01
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Allen-Bradley
1794-IB16
Allen Bradley 1794-IB16 24VDC Input Module
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Schmersal
101128981
Schmersal AES 1102 24 VDC 101128981 Module Safety Monitoring
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Siemens
C1 6EC1
Siemens Simatic C1 6EC1 652-3A
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Fisher-rosemount
KJ4001X1-BA2
FISHER-ROSEMOUNT CONTROLLER MD KJ4001X1-BA2 5 VDC 1.4A Replacement PLC Module
Out of stock
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Fanuc
OA16D
Fanuc LTD Output Module OA16D A03B-0801-C117
Out of stock
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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).
Guides for PLCs & Automation
- 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
- 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.
- 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.
- 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.