A Global Supplier of Industrial Electronics

GE / IP FANUC Series 90/30 In Stock

A Global Supplier of Industrial Electronics



Mon-Fri 8AM-5PM EST

SLC 503-AB

Allen Bradley - SLC-500 - SLC 503

Allen Bradley - SLC-500 - SLC 503 Allen Bradley - SLC-500 - SLC 503 - Wiring

SKU 2177344  UPC 0799705807655

All product names, trademarks, brands and logos used on this site are the property of their respective owners. PDF Supply is not an authorized distributor, reseller or representative of the products featured on this website. 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.

Call for details


Free Ground Shipping*

US continental orders placed Monday-Friday before 4:30pm EST!

Lowest Price Guarantee


The Allen-Bradley SLC 503 processor is part of the very diverse SLC 500 series of processors. It provides the power needed to configure modular controllers which have a maximum of 4096 inputs and an additional 4096 outputs. These processors are equipped with either 8K or 16K memory. To add to the RH-485 port, the SLC 503 has an additional built-in RS-232-C port for communication. The two extra ports can be adjusted to accommodate ASCII or DF1 protocols. Configuring the RS-232 port for ASCII or DF1 communication enables connection to the 1761-NET-AIC converter, which facilitates a path to the DH-485 network.


The SLC 503 executes bit-instruction at 0.44ms times. Additionally, the SLC 503 has an extra throughput of up to 10 times. The SLC 503 also features online programming, runtime editing, flash memory upgrades, a key switch, a real-time clock and calendar, which are all built-in.  The SLC 503 has a battery-backed RAM, EPROM or EEPROM. The SLC-500 series offers options to incorporate Remote I/O using the 1747-SN scanner module. DeviceNet I/O can be added using the 1747-SDN scanner module, and with the 1747-BAS module users can accommodate BASIC programming options. The SLC 503 also has an Ethernet and DH+ communication ports.


The SLC 503 is powered by an external power supply attached to the 1747 I/O chassis. Users can track the function of the external power supply through the LED indicators featured on the panel. Users also have the option to select AC or DC power supply. The AC power supply ranges from 120-240V. 

AB SLC 5/03 Processors include L531, L532, or L533, Programmable Processors 1747-L53x

PDF Electric & Supply Inc. sells new, new surplus and refurbished products which are sourced through independent channels. All warranties and support, if applicable, are with PDF Electric & Supply Inc. and not the manufacturer. PDF Electric & Supply Inc. is not an authorized distributor or representative for the listed manufacturers and makes no representations as to any quality control performed by any listed manufacturer on the products. The products listed on this website may vary as to their country of origin; the accessories, and other items included with the product; and the language used on the packaging, the parts, and any related instructions or printed material related to the products. This website is not sanctioned or approved by any manufacturer or tradename listed. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.