Industrial Automation » Programmable Logic Controllers (PLC)

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Used i/o modules

  • Trusted Seller
    Allen Bradley Micrologix 1000 I/o

    Allen Bradley Micrologix 1000 I/o Module - 1761-l32bwb

    • Manufacturer: Allen-Bradley
    • Model: 1761-L32BWB

    New Open Box Name: Micrologix 1000 I/o Module | Arrival date: 08-14-2025 | Dimensions l x w x h (inches): 9 x 9 x 9 | Electrical: 24VDC POWER | Weight (lb.): 1 | Available quantity: 1

    $240 USD
    Euclid, OH
  • Trusted Seller
    Allen-bradley Controllogix 17-slot Chassis With

    Allen-bradley Controllogix 17-slot Chassis With Psu And I/o Modules - 1756-a17

    • Manufacturer: Allen-Bradley
    • Model: 1756

    Used, Untested. (3x)1756-ib16, (2x)1756-ob16e Name: Controllogix 17-slot Chassis With Psu And I/o Modules | Arrival date: 08-28-2025 | Dimensions l x w x h (inches): 31 x 11 x 11 | Weight (lb.): 11 | Available qu...

    $230 USD
    Euclid, OH
  • Trusted Seller
    Allen-Bradley 1791-16AC I/O Module

    Allen-Bradley 1791-16AC I/O Module

    • Manufacturer: Allen-Bradley
    • Model: 1791

    $1,750 USD
    Eaton Rapids, MI
  • Trusted Seller
    ALLEN BRADLEY 1771-DA SER A

    ALLEN BRADLEY 1771-DA SER A ASCII I/O MODULE

    • Manufacturer: Allen-Bradley
    • Model: 1771

    Came from working unit 30 day warranty wrbin17 Mpn: 1771-DA | Ebay product id (epid): 143766098 | Type: I/O Module

    $45 USD
    Muskegon, MI
  • Trusted Seller
    ALLEN BRADLEY SLC 500 COMBINATION

    ALLEN BRADLEY SLC 500 COMBINATION I/O MODULE 1746-I012 SER. B

    • Manufacturer: Allen-Bradley
    • Model: 1746

    Came from working unit 30 day warranty WrC Mpn: 1746-I012 | Controller platform: SLC 500 | Type: I/O Module

    $49 USD
    Muskegon, MI
  • ALLEN BRADLEY,1771-AL,I/O ADAPTER MODULE

    ALLEN BRADLEY,1771-AL,I/O ADAPTER MODULE

    • Manufacturer: Allen-Bradley
    • Model: 1771

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $20 USD
    Galion, OH
  • OPTO 22,IDC5Q,I/O MODULE NOS

    OPTO 22,IDC5Q,I/O MODULE NOS

    • Manufacturer: Opto 22

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $15 USD
    Galion, OH
  • OPTO 22,SNAP-OAC5,I/O MODULE

    OPTO 22,SNAP-OAC5,I/O MODULE

    • Manufacturer: Opto 22

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $15 USD
    Galion, OH
  • Trusted Seller
    Allen-Bradley 1791-16BC 24 VDC IN/OUT

    Allen-Bradley 1791-16BC 24 VDC IN/OUT I/O Module

    • Manufacturer: Allen-Bradley
    • Model: 1791

    $150 USD
    Eaton Rapids, MI
  • RELIANCE,0-57416,REMOTE I/O COMMUNICATIONS MODULE NOS

    RELIANCE,0-57416,REMOTE I/O COMMUNICATIONS MODULE NOS

    • Manufacturer: Reliance Electric

    New, box is dirty from storage. NOS. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictu...

    $400 USD
    Galion, OH
  • OPTO-22,B3000,SNAP BRAIN MODULE, BOARD &

    OPTO-22,B3000,SNAP BRAIN MODULE, BOARD & I/O MODULES

    • Manufacturer: Opto 22

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $95 USD
    Galion, OH
  • Reliance Electric,57C416,Remote I/O Communications Module

    Reliance Electric,57C416,Remote I/O Communications Module

    • Manufacturer: Reliance Electric

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $60 USD
    Galion, OH
  • Reliance Electric,57C416,Remote I/O Communications Module

    Reliance Electric,57C416,Remote I/O Communications Module

    • Manufacturer: Reliance Electric

    What's Included? See photos. We try our best to provide full details of each item and any included accessories, but if it's not shown in the photos then it will not be included with the item. 30-Day Easy Returns ...

    $44 USD
    Galion, OH
  • Trusted Seller
    General Electric Ge IS220PSVOH1B Mark

    General Electric Ge IS220PSVOH1B Mark Vie Servo I/o Module

    • Manufacturer: GE

    “INSTALLED BUT UNUSED” Model number: IS220PSVOH1B | Model line: MARK VIE | Mpn: IS220PSVOH1B | Shipping weight: 2 lbs | Shipping dimensions: 5 x 4 x 4 in | Additional notes: INSTALLED BUT UNUSED | Reference sku: ...

    $7,228 USD

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    Est. $142/mo

    Delta, OH
  • Trusted Seller
    OMRON SYSMAC 3G2A3-OC221 I/O DEVICE

    OMRON SYSMAC 3G2A3-OC221 I/O DEVICE OUTPUT MODULE

    • Manufacturer: Omron
    • Model: 3G2A

    Came from working unit 30 day warranty wrbin17 Mpn: 3G2A3OC221 | Ebay product id (epid): 169936845 | Type: I/O Module

    $20 USD
    Muskegon, MI
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Overview

Programmable Logic Controllers (PLCs) are essential components in industrial automation, used for controlling machinery and processes in manufacturing, production lines, and other automated systems. They are designed to handle multiple inputs and outputs, offering reliable, flexible, and scalable solutions for complex control tasks. PLCs are known for their robustness and ability to operate in harsh industrial environments.

FAQ

What factors should I consider when purchasing a PLC?

Consider the number of input/output points required, the processing speed, memory capacity, compatibility with existing systems, and the specific application needs. Also, check for the availability of technical support and software updates.

How can I ensure safe shipping of a PLC?

Use a reputable shipping service that specializes in delicate electronic equipment. Ensure the PLC is packaged securely with ample padding to protect against shocks and vibrations during transit.

What are the maintenance requirements for a PLC?

Regularly inspect the PLC for dust and debris, ensure proper ventilation, and check connections for any signs of wear or corrosion. Follow the manufacturer's guidelines for firmware updates and system diagnostics to ensure optimal performance.