Allen-Bradley SLC 500 System

Our Bulletin 1747 SLC™ 500 control platform is used for a wide variety of applications. Aotewell Automation has announced that some SLC 500 Bulletin numbers are discontinued and no longer available for sale. Customers are encouraged to migrate to our newer CompactLogix™ 5370 or 5380 control platforms.

Allen-Bradley SLC PLC System SLC 500

  • Up to 64 K words of configurable data and program memory
  • Control up to 4096 input and 4096 output signals
  • Configure up to three local chassis, with 30 local I/O or communication modules maximum
  • Monitor and control remotely located I/O across ControlNet™, DeviceNet™, and Universal Remote I/O links (requires I/O scanner module)
  • Built-in ports for EtherNet/IP™, DH+, DH-485, or RS-232 communication
  • Available communication modules provide additional communication options
  • Specialty modules support simple motion control applications
  • Continued support and on-going engineering investment for a large installed base
  • 1747 SLC™ 500 Controllers
  • 1746 SLC I/O
  • 1746 Chassis
  • 1747 Communication Interface Modules
  • 1746 Power Supplies
  • UL, C-UL, CE, C-Tick

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Frequently Viewed Publications
  • SLC 500 System Brochure
  • SLC 500 Selection Guide
  • More SLC 500 System documents in Literature Library
Product Catalog

Find catalog numbers, certifications, and specifications.

SLC System Applications

The SLC™ 500 family provides cost-effective, reliable control in hundreds of thousands of applications around the world — everything from amusement park rides and micro-breweries to pharmaceutical and food processes. It is well-suited for applications where the size and overhead of a traditional, full-size PLC system is not justified.

SLC 500 controllers are ideal for OEM applications on the following types of machinery:

  • Packaging machinery
  • Conveyors and other material handling machinery
  • Machine tools
  • Textile machinery
  • Food products machinery
  • Pharmaceutical products machinery

Allen-Bradley SLC System


RockWell Allen-Bradley 1747 SLC™ 500 PLC is a chassis-based, modular family of controllers and I/O. With multiple

processor choices, numerous power supply options and extensive I/O capacity, the SLC 500 family provides a powerful solution for mid-range stand-alone or distributed industrial control. As one of the first full-featured small controllers on the market, it remains the gold standard in logic controllers more than a decade after its introduction.


SLC-500 Communication Interfaces

Allen-Bradley SLC PLC System 1747 SLC™ 500 Communication Interface Modules let you add another communication port to the SLC 500 controller. This adds network capability beyond the available on-board ports. Some modules provide an interface between a port on the controller and another communication link with a different protocol. Other modules communicate with the SLC processor over the system backplane.


SLC 500 Controllers

Allen-Bradley SLC PLC System 1747 SLC™ 500 controllers provide a range of choices in memory, I/O capacity, instruction set,

and communication ports to let you tailor a control system to your exact application requirements. Our controllers have a strong reliability history covering hundreds of thousands of installations in a broad range of applications.SLC 500 Controller Comparison

SLC-500 Chassis

Allen-Bradley SLC PLC System 1746 SLC™ 500 Power Supplies provide power to installed controllers or adapters and I/O
modules in an SLC chassis. Seven power supplies support a range of AC and DC input voltages.

Allen-Bradley SLC™ 500 system requires a chassis to contain the various modules. Chassis are available in sizes of 4, 7, 10, and 13 module slots. The backplane provides a communication path between the I/O modules and either the controller or the I/O adapter module.


1746 SLC Digital I/O Modules,1746 SLC Analog I/O Modules,1746 SLC Specialty I/O Modules,1746 SLC Communication InterfacesAllen-Bradley SLC PLC System 1746 SLC™ I/O provides a full range of digital, analog, and specialty I/O for a wide variety of applications. You can use the I/O modules in a local I/O chassis of an SLC 500 controller. Or, use an I/O communication adapter module to place I/O in a chassis at a location remote from the controller.

Power Supplies

Bulletin 1746 SLC™ 500 power supplies provide power to installed controllers or adapters and I/O modules in an SLC chassis. Seven power supplies support a range of AC and DC input voltages.

  • Withstands brief power losses without affecting the operation of the system
  • Typical hold-up time of 20 milliseconds to 3 seconds
  • Connects directly to the chassis without an additional cable
  • Four DC options support 12/24V DC, 24V DC, 48V DC and 125V DC input voltages
  • Three AC options support 120/240V AC input voltages

SLC System Software

Use RSLogix 500 programming software software to program your SLC™ 500 system.

The controller and modules you select, along with your network configuration, determine which additional software packages you need to configure and program your system. Additional required software may include:

  • RSNetWorx network configuration software
  • RSLinx communication software

Allen-Bradley SLC PLC System 1747, Please contact our sales personnel.

SLC 5/01 1 K or 4 K 960 Local I/O DH-485 (cannot initiate messages) Basic set of 51 instructions
SLC 5/02 4 K 4096 Local I/O, remote I/O DH-485 Expanded instruction set, faster scan times, extensive diagnostics for more complex applications
SLC 5/03 8 K, 16 K, or 32 K 4096 Local I/O, remote I/O DH-485, RS-232-C (ASCII or DF1) Connects to external intelligent devices using the RS-232 port, without additional modules
SLC 5/04 16 K, 32 K, or 64 K 4096 Local I/O, remote I/O DH+, RS-232-C (ASCII or DF1) High-speed peer-to-peer communications and direct connection to PLC-5 controllers
SLC 5/05 16 K, 32 K, or 64 K 4096 Local I/O, remote I/O Ethernet (10BASE-T 10/100 Mbps), RS-232-C (ASCII or DF1) Ethernet supports program upload and download, on-line editing, and peer-to-peer messaging