Allen-Bradley
1746-OX8
Allen-Bradley 1746-OX8 SLC 500 Isolated Relay Output Module 8 Point Series A
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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
Mitsubishi
QX41
Mitsubishi QX41 MELSEC-Q Input Unit Module 32 Point 24VDC 4mA PLC DC Positive
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Mitsubishi
A1SX40
Mitsubishi A1SX40 MELSEC Input Unit Module 16 Point 12/24VDC 3/7mA A1S PLC DC
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Mitsubishi
A1SJ71UC24-R2
Mitsubishi A1SJ71UC24-R2 RS-232C Computer Link Communication Unit A1S PLC Module
Out of stock
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Mitsubishi
AJ65SBTB1-32D1
Mitsubishi AJ65SBTB1-32D1 MELSEC CC-Link Input Unit 32 Point 24VDC 5mA 1.2W
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Keyence
CB-EP100
Keyence CB-EP100 EtherNet/IP Communication Unit Expansion Module Industrial
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Allen-Bradley
1756-PB75/B
Allen-Bradley 1756-PB75/B ControlLogix DC Power Supply 24VDC 96426674 Automation
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FDK
CR14250SE
FDK CR14250SE BCBB1A 3V 850mAh Lithium 1/2AA PLC Memory Backup Battery Japan
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Keyence
DL-EP1
Keyence DL-EP1 EtherNet/IP Communication Unit Module 20-30VDC Class 2 Network
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Siemens
TM-P15S23-A0
Siemens TM-P15S23-A0 6ES7193-4CD20-0AA0 SIMATIC ET 200S Terminal Module Power
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Allen-Bradley
1771-OFC
Allen-Bradley 1771-OFC Analog Output Module 12 Bit PLC-5 Industrial Automation
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Schneider Electric
BMXFTB2000
Schneider Electric BMXFTB2000 Modicon Terminal Block 20 Point Screw Connector
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Schneider Electric
BMXFTB2000
Schneider Electric BMXFTB2000 Modicon M340 Screw Terminal Strip 20 Point Block
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Mitsubishi
AJ65SBTB1-32D
Mitsubishi Electric AJ65SBTB1-32D 24VDC 7mA
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Beckhoff
BK9105
Beckhoff BK9105 EtherNet/IP Bus Coupler 2-Port K-Bus 24VDC PLC Industrial Module
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Mitsubishi
Q38B
Mitsubushi Q38B E46669-711V BD627E.9-711V646651A
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Mitsubishi
AJ65SBTB2N-16A
Mitsubishi AJ65SBTB2N-16A 100-120VAC 50/60Hz
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Mitsubishi
AJ65SBTB1-32T
Mitsubishi Electric AJ65SBTB1-32T
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Mitsubishi
AJ65SBT-62DA
Mitsubishi AJ65SBT-62DA CC-Link Digital Analog Output Module PLC Compact I/O
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Mitsubishi
Q35B
Mitsubishi Q35B E46669-711V
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Mitsubishi
Q02HCPU
Mitsubishi Q02HCPU CPU Unit Melsec Q
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Mitsubishi
QY42P
Mitsubishi Output Unit QY42P Melsec-Q
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Mitsubishi
A6TBXY36
Mitsubishi A6TBXY36 Sink Input/Output Terminal Board 36-Point PLC Industrial OEM
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Mitsubishi
AJ65SBTB1-32T1
Mitsubishi AJ65SBTB1-32T1 CC-Link Output Unit 24VDC Industrial OEM
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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.