PDF Electric and Supply



Buy Now1785-L20C
1785-L20C Wiring

Rated 4.7/5 based on 3 ratings.
  • 1785-L20C
  • 1785-L20C Wiring
PDF Electric & Supply Company is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

The 1785-L20C Module is an Allen-Bradley PLC 5 ControlNet Processor Module. It has 512 maximum total I/O, 16 maximum MCPs, with a Serial Port and a Coprocessor Port. The Allen-Bradley 1785-L20C PLC-5 is a programmable ControlNet controller and processor. When installing the 1785-L20C PLC-5 processor, an approved ground point should be used, and the users should avoid touching the connector pins or the backplane connector. And when the processor is not in use, it should be kept in its static-shielded container to avoid electric shock and any likely static-related damage to the processor. The Allen-Bradley 1785-L20C has a red/green RUN/FAULT indicator light, a red battery indicator light, an amber force indicator light, a red/green Channel 2 indicator light, a red/green ControlNet I/O indicator light, and a red/green ACTIVE/FAULT Channel 0 Communication indicator light on the front panel. The front panel carries a battery compartment, memory module, processor mode selection key switch, and numerous channel ports.

The 1785-L20C is designed and intended for use with an I/O chassis. Before removing or installing the PLC-5 processor, ensure that the chassis power is switched off. The 1785-L20C is equipped with a serial port, a coprocessor port, and control coprocessor expansion port. It supports up to 512 normal I/O and 512 analog I/O. It has a scan time of 2 milliseconds per keyword. The I/O scan time per rack is 10 milliseconds at 57.6 kbit/second, and it is 7 milliseconds at 115.2 kbit/second. It comes with tools for installing the processor, including a lithium battery known as the 1770-XYC, a battery cover and a screw, 4 terminating resistors 150-Ohm, 2 keys, 2 82-Ohm terminating resistors. It also has a DIN rail connector cover, a cable adapter called the 1784-CP7, and two 3-pin connectors.

Other Automation PLC-5

SKU 2174014  UPC 0799705796515

AB PLC-5/20C ControlNet 1.25 Cntrlr. 16K 1785L 1785L2 1785L20

Troubleshooting and Product Information for 1785-L20C

Download product information, troubleshooting guides and operation manuals to get your PLC operational.

Other Automation
PLC-5 1785-L20C
Weight: 2 Lbs
Dimensions: 10"x12"x2"In
Call Now
Call For Availability
Call Now 1-800-360-6802
Weight: 2 Lbs
Dimensions: 10"x12"x2"In
Call Now
FAST Quote

Other 1785-L20C

Available Revisions:

1785-L20C , CIM1785-L20C

    Need To Order A Specific Revision?

    Give us a call at 1-800-360-6802 or 1-919-535-3180.

    We can help you with your Revision specific needs.

    Free Overnight delivery on orders over $500!

    What is New Surplus?

    These “New Surplus” units are a great cost saving alternative. This product is sealed in the original manufacturer’s packaging with all sub-assemblies and documentation. May indicate older date code. Comes with a PDF Supply 3-year warranty.

    Free Overnight delivery on orders over $500!

    What is Surplus New?

    Surplus New - New unused and includes all sub-assemblies and documentation. Product may ship in manufacturer or PDF Supply packaging. May indicate older date code. Includes a PDF Supply 3 Year Warranty.

    Free Overnight delivery on orders over $500!

    What is Reconditioned?

    Reconditioned products from PDF Supply are a cost-effective alternative to new and obsoleted PLC products. Every part is reconditioned down to the circuit board level and updated to the latest revision. All parts are thoroughly inspected and hand-cleaned before being functionally tested in a fully configured system.

    Our Reconditioned Products always come with a PDF Supply 2-Year Warranty.

    Free Overnight delivery on orders over $500!

    What is a Verified Substitute?

    A verified substitute new product is a "drop in" replacement designed with identical specifications as the OEM product. It will meet all electrical and dimensional charactertics at a substanstially reduced price.

    Free Overnight delivery on orders over $500!

    Download Lastest Documentation

    Please visit this manufacturer's website to download the lastest manuals and datasheets.

    Lowest Price Guarantee

    We stand behind our prices with a lowest price guarantee. If you find a legacy GE PLC part advertised for less on an authorized GE PLC distributor website, simply contact us and send us a link to the lower advertised price. We will match that price and ship overnight FREE. The item must be in stock, in similar condition and be able to ship same day.

    Free Shipping

    FREE Overnight Delivery for Continental US orders over $500!

    FREE Ground Delivery for Continental US orders under $500!

    US orders placed Monday - Friday before 5pm EST will ship same day.

    Canada/Mexico orders placed Monday - Friday before 3:30pm EST will ship same day.

    International orders will ship the following business day.