Allen-Bradley
1771-IB
Allen Bradley 1771-IB PLC-5 DC Input Module 12-24VDC 8-Point Industrial Control
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PLC I/O Modules
710 listings · 584 in stock
710 PLC I/O modules listings from the brands you use, each one photographed. Free shipping to all 50 US states.
Siemens
TI305-017
Siemens TI305-017 Input Module PLC Controller 305 Series Texas Instruments DC
Out of stock
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Phoenix Contact
2767972
Phoenix Contact 2767972 IBS 24 DO I Interbus-S Digital Output Module Ident 129
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Honeywell
621-2101R
Honeywell 621-2101R Isolated Digital Output Module 6-Point 115VAC PLC TDC 3000
Out of stock
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Modicon
B855
Modicon PLC Input Module 12 VDC B855 AS-B855-016 Each
Out of stock
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Honeywell
621-0015
Honeywell 621-0015 Isolated Analog Input Module 8-Point Industrial PLC TDC DCS
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Reliance Electric
0-57400-B
Reliance Electric 0-57400-B 115V AC/DC Input Module PLC DCS AutoMax Industrial
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General Electric
PWB68A999145
GE Speedtronics PWB68A999145 Input Module Receptacle Card Terminal Board
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Moore
16193-1-4
Moore 16193-1-4 APACS+ IDM Input Discrete Module Marshalled Termination 115VAC
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Industrial part
1781-IB5S
WRC 1781-IB5S PLC Digital Input Module 3-32 Vdc 50mA Lot of 10 Industrial OEM
Out of stock
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Schneider Electric
Schneider Telemecanique Advantys STB ACO 0220 An
Schneider Telemecanique Advantys STB ACO 0220 Analog Output Module 1 Per Order
Out of stock
Spectrum Controls
8000 RDI-332
Spectrum Controls 8000 RDI-332 Sy/Max Digital Input Module 32 Channel 120VAC/DC
Out of stock
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Allen-Bradley
1771-ISC
Allen Bradley 1771-ISC DC 5V Multiplexer Input Module PLC-5 Series A Industrial
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Square D
8030 HIM-151
Square D 8030 HIM-151 Series B Symax TTL 8 Function Input Module 5VDC Industrial
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 PLC I/O Modules
- 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
- TroubleshootingPLC I/O Module Fault or Not Responding: First ChecksModule status LEDs on ControlLogix, SLC 500, S7-300 and S7-1500 I/O, the Logix connection codes (16#0204, keying 16#0114/0116), power, slot, keying and field wiring 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.