Allen-Bradley
1734-OB8
Allen-Bradley 1734-OB8 Ser C POINT I/O 8 Point 24VDC Source Output Module PLC
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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
Allen-Bradley
1734-TOPS
Allen-Bradley 1734-TOPS Series A POINT I/O Spring Clamp Terminal Base Module
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Allen-Bradley
1734-TOPS
Allen-Bradley 1734-TOPS Ser A POINT I/O Terminal Base Spring Clamp Module Mount
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Toshiba
TCPFBC-2
Toshiba Machine TCPFBC-2 Process Controller Feedback CPU Module D5FB1-A3 Board
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Siemens
S5 6ES5
Siemens Simatic S5 6ES5 943-7UB11 CPU 943B Central Processing Unit 115U PLC
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Barber-Colman
A-13025-202
Barber Colman A-13025-202 MACO 8000 Memory Cartridge 32K Module 3916-0958 PLC
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Phoenix Contact
5601749
Phoenix Contact 5601749 FLKM 8-GMT-BRIDGED Fused Interface Module UMK-SE 11,25
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Beckhoff
IL2301-B310-0000
Beckhoff IL2301-B310-0000 Profibus Coupler Box 4 Digital In Out M8 Fieldbus IO
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Siemens
6ES7315-1AF03-0AB0
Siemens 6ES7315-1AF03-0AB0 Simatic S7-300 CPU 315 PLC 24 VDC 0.7 A 48KB 0-60 C
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Nordson
BCM-CBST-STD02AIAT
Nordson BCM-CBST-STD02AIAT 8520382 Hot Melt Adhesive Applicator Module 240V 200W
Out of stock
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Mitsubishi
AJ65SBTB1-32D1
Mitsubishi AJ65SBTB1-32D1 MELSEC CC-Link Remote Input Unit 32 Point 24VDC 5mA
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Mitsubishi
QJ61BT11N
Mitsubishi QJ61BT11N MELSEC-Q CC-Link Master Local Unit Module 5VDC 0.46A Japan
Out of stock
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Mitsubishi
AJ65SBT-64AD
Mitsubishi AJ65SBT-64AD MELSEC CC-Link Analog A/D Converter Unit 4 Channel 24VDC
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Mitsubishi
Q64AD
Mitsubishi Q64AD MELSEC-Q Analog Input A/D Converter Unit 4 Channel 5VDC 0.63A
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Mitsubishi
AJ65SBT-64AD
Mitsubishi AJ65SBT-64AD MELSEC CC-Link Analog A/D Converter Unit 4 Channel 24VDC
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Mitsubishi
AJ65SBTB1-32D1
Mitsubishi AJ65SBTB1-32D1 MELSEC CC-Link Remote Input Unit 32 Point 24VDC 5mA
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Mitsubishi
AJ65SBTB1-32D1
Mitsubishi AJ65SBTB1-32D1 MELSEC CC-Link Remote Input Unit 32 Point 24VDC 5mA
Out of stock
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Mitsubishi
QJ61BT11N
Mitsubishi QJ61BT11N MELSEC-Q CC-Link Master Local Unit Module 5VDC 0.46A Japan
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Mitsubishi
AJ65SBTB1-32D1
Mitsubishi AJ65SBTB1-32D1 MELSEC CC-Link Remote Input Unit 32 Point 24VDC 5mA
Out of stock
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Mitsubishi
AJ65SBTB1-32T1
Mitsubishi AJ65SBTB1-32T1 MELSEC CC-Link Remote Output Unit 32 Point 24VDC 0.5A
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Mitsubishi
AJ65SBTB1-32T1
Mitsubishi AJ65SBTB1-32T1 MELSEC CC-Link Remote Output Unit 32 Point 24VDC 0.5A
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Mitsubishi
Q06UDEHCPU
Mitsubishi Q06UDEHCPU MELSEC-Q Universal Model CPU Unit 60K Step Ethernet 5VDC
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Omron
G6D-F4B
Omron G6D-F4B Terminal Relay Module DC24V 5A 250VAC 4-Channel DIN Rail Base PLC
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Mitsubishi
Q06UDEHCPU
Mitsubishi Melsec-Q Q06UDEHCPU PLC CPU Unit 60K Step Built-IN Ethernet USB 5VDC
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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.