Mitsubishi
FA-TW73
Mitsubishi Electric Engineering FA-TW73 CC-Link Waterproof T-Branch Module 24V
Only 3 left
Free shippingShips today by 3 PM CT
$146.89
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
1485T-P2T5-T5
Allen-Bradley 1485T-P2T5-T5 Ser. C DeviceNet PowerTap 24VDC 2 Port Panel Mount
Only 2 left
Free shippingShips today by 3 PM CT
$48.89
Foxboro
RH914YZ
Foxboro FCM2F2 RH914YZ Fieldbus Communications Module 2Mbps Fiber 2km 24VDC 5.5W
Only 1 left
Free shippingShips today by 3 PM CT
$440.89
Sigmatek
01-007-324
Sigmatek TO 32F 01-007-324 Digital Output Module 32 Channel 37-Pin D-Sub HW V1.0
Only 1 left
Free shippingShips today by 3 PM CT
$260.89
Allen-Bradley
1771-OBD
Allen-Bradley 96211471 1771-OBD PLC-5 DC Output Module 16Pt 10-60VDC 2A 8A Ser C
In stock
Free shippingShips today by 3 PM CT
$33.89
Allen-Bradley
1746-OB16
Allen-Bradley 1746-OB16 SLC 500 Output Module 16Pt Sourcing 10-50VDC 0.5A Ser D
Only 2 left
Free shippingShips today by 3 PM CT
$9.89
Industrial part
820-0040-1R
820-0040-1R Rev D Communication Module USB RS-232 DataMan 8000 Barcode Reader
In stock
Free shippingShips today by 3 PM CT
$442.89
Allen-Bradley
1756-L55/A
Allen-Bradley 1756-L55/A ControlLogix Processor 3.5MB RS232 630mA 5.1VDC Ser A
Only 4 left
Free shippingShips today by 3 PM CT
$43.89
ABB
INNPM12
ABB INNPM12 Network Process Module Symphony 5VDC 10W 512KB ROM/RAM FM Cl I Div 2
Only 1 left
Free shippingShips today by 3 PM CT
$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
Free shippingShips today by 3 PM CT
$77.89
Industrial part
FDN-DN1
InterlinkBT FDN-DN1 6603596 DeviceNet Spanner Module 128 Bytes 11-30 VDC IP67
Only 3 left
Free shippingShips today by 3 PM CT
$382.89
Allen-Bradley
1756-L63
Allen-Bradley 1756-L63 ControlLogix 5563 Processor Ser B 8MB RS232 CompactFlash
Only 1 left
Free shippingShips today by 3 PM CT
$78.89
Allen-Bradley
1756-L55
Allen-Bradley 1756-L55 Ser A ControlLogix Processor 750KB 1756-M12 RS232 FW 1.4
Only 1 left
Free shippingShips today by 3 PM CT
$29.89
Allen-Bradley
1756-DHRIO
Allen-Bradley 1756-DHRIO ControlLogix DH+/RIO Interface Module Ser C 2 Ch 850mA
Only 1 left
Free shippingShips today by 3 PM CT
$23.89
IAI
PCON-CA-42PSA-NP-2-0-ABU
IAI PCON-CA-42PSA-NP-2-0-ABU Position Controller 24VDC 3.8A 1.2A NPN DIN Rail
Only 1 left
Free shippingShips today by 3 PM CT
$166.89
IAI
RCP2-RA8C
IAI PCON-CFA-60PI-CC-0-0 Position Controller 24VDC 6.3A 4A IP20 RCP2-RA8C 150mm
Only 1 left
Free shippingShips today by 3 PM CT
$342.89
Allen-Bradley
1756-L55
Allen-Bradley 1756-L55 Ser A ControlLogix Processor 1.5MB RS232 630mA 5.1VDC
Only 1 left
Free shippingShips today by 3 PM CT
$211.89
Allen-Bradley
1756-IB32
Allen-Bradley 1756-IB32 ControlLogix 32-Point Input Module 12/24V Sinking Ser. B
Only 3 left
Free shippingShips today by 3 PM CT
$19.89
Allen-Bradley
1734D-IA16
Allen-Bradley 1734D-IA16 Ser A POINT I/O 16 Input 120VAC DeviceNet 24VDC 95mA
Only 1 left
Free shippingShips today by 3 PM CT
$23.89
ABB
ABB5624-12001
ABB ABB5624-12001 Miniature Edgewise Indicator -5 to +5 kPa Current Input Module
In stock
Free shippingShips today by 3 PM CT
$293.89
Reliance Electric
57C442B
Reliance Electric 57C442B AutoMax Data Highway Plus Interface Module 5VDC 650mA
Only 1 left
Free shippingShips today by 3 PM CT
$2,204.89
ABB
1KGT033300R0002
ABB 520BOD01 1KGT033300R0002 RTU520 Binary Output Module 8 Relay 150 VDC 8A 24V
Only 2 left
Free shippingShips today by 3 PM CT
$300.89
Foxboro
P0972VA
Foxboro P0972VA I/A Series Address Translator Station ATS Module REV 0E Nodebus
Only 3 left
Free shippingShips today by 3 PM CT
$364.89
Reliance Electric
57409-D
Reliance Electric 57409-D AutoMax Analog Input Module 2-Channel 10V 25mA J-3637
Only 1 left
Free shippingShips today by 3 PM CT
$58.89
Get a quote on PLCs & Automation
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.